332354 + Interview Questions in Secondary School in Math

1.	Tan=
Answer» ANSWER: Hii Is it FORMULA OK then.. TAN theta=opp SIDE/adj side

1.

Tan=

Answer»

ANSWER:

Hii

Is it FORMULA

OK then..

TAN theta=opp SIDE/adj side

Discussion

2.	Find the compound interest for the principal Rs.5000, r=4% p.a, n= 1 1/2 years, interest is compounded half yearly.
Answer» Answer: answer in top in image Step-by-step explanation: P = Rs.5000, R = 4% p.a. = 2% per half year T = 1 year = 2 half YEARS ⇒ n = 2 ∴C.I.=A−P=5000(1+ 100 2 ) 2 −5000=5000×[( 50 51 ) 2 −1]=5000[ 50 2 (51) 2 −(50) 2 ] =5000× 2500 (51−50)×(51+50) =2×101=Rs.202

2.

Find the compound interest for the principal Rs.5000, r=4% p.a, n= 1 1/2 years, interest is compounded half yearly.

Answer»

Answer:

answer in top in image

Step-by-step explanation:

P = Rs.5000, R = 4% p.a. = 2% per half year

T = 1 year = 2 half YEARS ⇒ n = 2

∴C.I.=A−P=5000(1+

100

2

)

2

−5000=5000×[(

50

51

)

2

−1]=5000[

50

2

(51)

2

−(50)

2

]

=5000×

2500

(51−50)×(51+50)

=2×101=Rs.202

Discussion

3.	Watch is a messenger prime number
Answer» ANSWER: what? WRITE RELEVENT QUESTION

3.

Watch is a messenger prime number

Answer»

ANSWER:

what? WRITE RELEVENT QUESTION

Discussion

4.	Hey , answer me this question
Answer» ANSWER: TUKKA MAR do..... .........✌...

4.

Hey , answer me this question

Answer»

ANSWER:

TUKKA MAR do.....

.........✌...

Discussion

5.	In ΔABC, If AP ⊥ BC and AC2 = BC2 – AB2, then prove that PA2 = PB × CP.
Answer» Answer: In TRIANGLE abc,if AP is PERPENDICULAR to BC and ac^2=bc^2-ab^2 then prove that pa^2=pb×cp. 2.

5.

In ΔABC, If AP ⊥ BC and AC2 = BC2 – AB2, then prove that PA2 = PB × CP.

Answer»

Answer:

In TRIANGLE abc,if AP is PERPENDICULAR to BC and ac^2=bc^2-ab^2 then prove that pa^2=pb×cp. 2.

Discussion

6.	The multiplicative inverse of -15_23 is...........
Answer» Answer: -23/15 Step-by-step EXPLANATION: PLEASE thank my answer and FOLLOW me MARK me as brainlist answer

6.

The multiplicative inverse of -15_23 is...........

Answer»

Answer:

-23/15

Step-by-step EXPLANATION:

PLEASE thank my answer and FOLLOW me MARK me as brainlist answer

Discussion

7.	Simple intrest on a sum at 25/2% per annum for 2 years is ₹256.the compound intrest on the same sum at the same rate and for the same period is
Answer» ANSWER: the COMPOUND INTEREST is RS. 27

7.

Simple intrest on a sum at 25/2% per annum for 2 years is ₹256.the compound intrest on the same sum at the same rate and for the same period is

Answer»

ANSWER:

the COMPOUND INTEREST is RS. 27

Discussion

8.	Hey, answer me this question
Answer» ANSWER: PLS MARK as BRAINLIEST and FOLLOW me

8.

Hey, answer me this question

Answer»

ANSWER:

PLS MARK as BRAINLIEST and FOLLOW me

Discussion

9.	4) In correspondence, if three sides of one triangle are equal to three sides ofanother triangle then the two triangles are congruent by....... a) A-S-A test b) S-A-S test c) S-S-S test d) hypotenuse-side test
Answer» ANSWER: A -S as TRIANGLE SAS TEST

9.

4) In correspondence, if three sides of one triangle are equal to three sides ofanother triangle then the two triangles are congruent by....... a) A-S-A test b) S-A-S test c) S-S-S test d) hypotenuse-side test

Answer»

ANSWER:

A -S as TRIANGLE SAS TEST

Discussion

10.	Simplify: (x^2 + 4)^2-16
Answer» Step-by-step EXPLANATION: I THINK this ANSWER is HELPFUL for you

10.

Simplify: (x^2 + 4)^2-16

Answer»

Step-by-step EXPLANATION:

I THINK this ANSWER is HELPFUL for you

Discussion

11.	Covering the14. Find the cost of flooring a room 6.5 m by 5 m with square tiles of side 25 cm13. A rectangular room is 10 m long and 7-3floor with carpet 1.25 m wide at 250 per metre.the rate of 9.40 pertile
Answer» Step-by-step explanation: area total FLOOR =6.55=32.5m^2 area ONE tile=0.250.25. (in meter) =0.0625m^2 number of tiles used=32.5/0.0625 =520 tiles 1 tile=9.40 520 tiles=520*9.40 =4888

11.

Covering the14. Find the cost of flooring a room 6.5 m by 5 m with square tiles of side 25 cm13. A rectangular room is 10 m long and 7-3floor with carpet 1.25 m wide at 250 per metre.the rate of 9.40 pertile

Answer»

Step-by-step explanation:

area total FLOOR =6.5*5=32.5m^2

area ONE tile=0.25*0.25. (in meter)

=0.0625m^2

number of tiles used=32.5/0.0625

=520 tiles

1 tile=9.40

520 tiles=520*9.40

=4888

Discussion

12.	Find the domain and range of the function y= √x^-4
Answer» ANSWER: PLEASE MARK me as BRAINLIST answer

12.

Find the domain and range of the function y= √x^-4

Answer»

ANSWER:

PLEASE MARK me as BRAINLIST answer

Discussion

13.	If a and b are two distinct whole numbers, which of the following statements is FALSE?a+b=b+aA plus b is equal to b plus Aa−b=b−aA minus b is equal to b minus Aa×b=b×aa×b=b×aNone of these
Answer» ANSWER: option B is false statement Step-by-step EXPLANATION: as a-b is not EQUAL to b-a example- LET a be 4 and b as 2 then according to the statement: 4-2= 2 (a-b) 2-4=-2 (b-a) so a-b is not equal to b-a

13.

If a and b are two distinct whole numbers, which of the following statements is FALSE?a+b=b+aA plus b is equal to b plus Aa−b=b−aA minus b is equal to b minus Aa×b=b×aa×b=b×aNone of these

Answer»

ANSWER:

option B is false statement

Step-by-step EXPLANATION:

as a-b is not EQUAL to b-a

example- LET a be 4 and b as 2 then according to the statement:

4-2= 2 (a-b)

2-4=-2 (b-a)

so a-b is not equal to b-a

Discussion

14.	3+5 एक27 सिद कानपप2 Mart48-5x16 के शून्यको का योग एवं गुणनफलज्ञात कीजिए।जन he5M
Answer» ANSWER: JO BHI HAI Magar GALAT hai

14.

3+5 एक27 सिद कानपप2 Mart48-5x16 के शून्यको का योग एवं गुणनफलज्ञात कीजिए।जन he5M

Answer»

ANSWER:

JO BHI HAI Magar GALAT hai

Discussion

15.	A ladder 14 metre long rests against a wall if the foot of the ladder is 7 metre from the wall then the angle of elevation of the ladder is1
Answer» ANSWER: I have ATTACHED an IMAGE below to HELP you out with this QUESTION.

15.

A ladder 14 metre long rests against a wall if the foot of the ladder is 7 metre from the wall then the angle of elevation of the ladder is1

Answer»

ANSWER:

I have ATTACHED an IMAGE below to HELP you out with this QUESTION.

Discussion

16.	Q10 बहुपद 2447-12 में शून्यको श्व गुणाको के बीचके संबध सत्यता की जाँच कीतिर।5 Mark
Answer» Step-by-step explanation: 2447-12 2435 answerrrrrrrrrrr

16.

Q10 बहुपद 2447-12 में शून्यको श्व गुणाको के बीचके संबध सत्यता की जाँच कीतिर।5 Mark

Answer»

Step-by-step explanation:

2447-12

2435 answerrrrrrrrrrr

Discussion

17.	LUS32Prove that cos? x + cos2x+ + coscos?3.TT--х32
Answer» Step-by-step explanation: bajzjnsnsjzbsizjsyzhzhxgbxns aka izbsusb oa Ka kAk aka aj aja ajw js eyve ie us jbsak ei je sjs. sj i b sj,sjs js sjs sjss jana qovwis ehsie sis sjssjs js ss sis sjs. SHS sjs siqowuedie xi EJD dj he owns owns new vs wbanwiwbwkqkqlsygshz wks sk aka aidqlsskw sow wkw aiw wkw qmwod SIW sow wiw eiw wkw wjwn wkw wkq wiq wqkw kq wqjq wiqvwkwbwkq wkq wqk kq qk k QIW qonwow w

17.

LUS32Prove that cos? x + cos2x+ + coscos?3.TT--х32

Answer»

Step-by-step explanation:

bajzjnsnsjzbsizjsyzhzhxgbxns aka izbsusb oa Ka kAk aka aj aja ajw js eyve ie us jbsak ei je sjs. sj i b sj,sjs js sjs sjss jana qovwis ehsie sis sjssjs js ss sis sjs. SHS sjs siqowuedie xi EJD dj he owns owns new vs wbanwiwbwkqkqlsygshz wks sk aka aidqlsskw sow wkw aiw wkw qmwod SIW sow wiw eiw wkw wjwn wkw wkq wiq wqkw kq wqjq wiqvwkwbwkq wkq wqk kq qk k QIW qonwow w

Discussion

18.	Write the equation x÷2+3y÷5=-1 in standard form and draw the graph.
Answer» ANSWER: X=1, y=1 Step-by-step EXPLANATION: MINUS all of them

18.

Write the equation x÷2+3y÷5=-1 in standard form and draw the graph.

Answer»

ANSWER:

X=1, y=1

Step-by-step EXPLANATION:

MINUS all of them

Discussion

19.	Find mean for the following
Answer» Answer: 1st ADD all the numbers then divide by how many there are solving in phone takes too MUCH TIME

19.

Find mean for the following

Answer»

Answer:

1st ADD all the numbers then divide by how many there are solving in phone takes too MUCH TIME

Discussion

20.	48.The value of (-3)4x5–16 is
Answer» Answer: HOPE it HELPS :) Step-by-step explanation: (-3)^45-16 (-3)^20-16 (-3)^4 (POWER means you will multiply that base by that number of TIMES)* -3-3-3-3 81 this was the answer by my SIDE what I think will be right*

20.

48.The value of (-3)4x5–16 is

Answer»

Answer:

HOPE it HELPS :)

Step-by-step explanation:

(-3)^4*5-16

(-3)^20-16

(-3)^4 (POWER means you will multiply that base by that number of TIMES)

-3*-3*-3*-3

81

this was the answer by my SIDE what I think will be right

Discussion

21.	X/2-x/3=x/3+1 by using cross multiplication method
Answer» Step-by-step explanation: ${\dfrac {x}{2}}-{\dfrac {x}{3}}={\dfrac{x}{3}}+1$ First ADD and SUBTRACT both SIDES accordingly. ${:}\longrightarrow$ ${\dfrac {3x-2x}{6}}={\dfrac {x+3}{3}}$ ${:}\longrightarrow$ ${\dfrac {x}{6}}={\dfrac{x+3}{3}}$ Now we USE cross multiplication. ${:}\longrightarrow$ $3x=6(x+3)$ ${:}\longrightarrow$ $3x=6x+18$ Now interchange both sides. ${:}\longrightarrow$ $6x+18=3x$ ${:}\longrightarrow$ $6x-3x=18$ ${:}\longrightarrow$ $3x=18$ ${:}\longrightarrow$ $x={\dfrac {18}{3}}$ ${:}\longrightarrow$ $x=6$ $\therefore$ ${\underline{\boxed{\bf {x=6}}}}$

21.

X/2-x/3=x/3+1 by using cross multiplication method

Answer»

Step-by-step explanation:

${\dfrac {x}{2}}-{\dfrac {x}{3}}={\dfrac{x}{3}}+1$

First ADD and SUBTRACT both SIDES accordingly.

${:}\longrightarrow$ ${\dfrac {3x-2x}{6}}={\dfrac {x+3}{3}}$

${:}\longrightarrow$ ${\dfrac {x}{6}}={\dfrac{x+3}{3}}$

Now we USE cross multiplication.

${:}\longrightarrow$ $3x=6(x+3)$

${:}\longrightarrow$ $3x=6x+18$

Now interchange both sides.

${:}\longrightarrow$ $6x+18=3x$

${:}\longrightarrow$ $6x-3x=18$

${:}\longrightarrow$ $3x=18$

${:}\longrightarrow$ $x={\dfrac {18}{3}}$

${:}\longrightarrow$ $x=6$

$\therefore$ ${\underline{\boxed{\bf {x=6}}}}$

Discussion

22.	DELTA/Pg No.DateJesuA man baught a horse and carriage for 3000.he resale the horse at a gain of 20% and carriage at a loss of 10%.there by gaining 2% on the whole .find the cost of horse
Answer» Step-by-step explanation: Answer: Let the CP of the HORSE be x. Then the CP of the CARRIAGE =(3000−x). 20%ofx−10%of(3000−x)=2%of3000 100 20 ×x− 100 10 ×(3000−x)= 100 2 ×3000 5 x − 10 1 (3000−x)=60 2x−3000+x=60×10=600 3x=3000+600=3600 x=1200 ∴ CP of the horse =1200

22.

DELTA/Pg No.DateJesuA man baught a horse and carriage for 3000.he resale the horse at a gain of 20% and carriage at a loss of 10%.there by gaining 2% on the whole .find the cost of horse

Answer»

Step-by-step explanation:

Answer:

Let the CP of the HORSE be x.

Then the CP of the CARRIAGE =(3000−x).

20%ofx−10%of(3000−x)=2%of3000

100

20

×x−

100

10

×(3000−x)=

100

2

×3000

5

x

−

10

1

(3000−x)=60

2x−3000+x=60×10=600

3x=3000+600=3600

x=1200

∴ CP of the horse =1200

Discussion

23.	F(x)= 1/K^x , x = 1,2,3... prove that f x = e^t/k-e^t
Answer» ANSWER: ZHU dhdhfhfhfjfjfjfjfkgjgjgjgngjgjtio5irir84747_747&758584949 Step-by-step explanation: DIL jazz Stonem

23.

F(x)= 1/K^x , x = 1,2,3... prove that f x = e^t/k-e^t

Answer»

ANSWER:

ZHU dhdhfhfhfjfjfjfjfkgjgjgjgngjgjtio5irir84747_747&758584949

Step-by-step explanation:

DIL jazz Stonem

Discussion

24.	If one of the two lines 3x^2 +kxy-y^2=0 bisects an angle between the co-ordinate axes, then k=?
Answer» Step-by-step EXPLANATION: $\sf {3x}^{2} - kxy - {y}^{2} = 0 \\ \\ \\ \sf divided \: \: by \: \: {x}^{2} \\ \\ \\ \sf 3 - \frac{ky}{x} - \frac{ {y}^{2} }{ {x}^{2} } = 0 \\ \\ \\ \sf y = mx \\ \\ \\ \sf \frac{y}{x} = m \\ \\ \\ \sf {m}^{2} + km - 3 = 0 \\ \\ \\ \sf \: one \: \: of \: \: the \: \: line \: \: bisect \: \: co - drdinate \: \: axis \\ \\ \\ \sf put \: \: m = 1 \: \: or \: \: m = - 1 \\ \\ \\ \sf 1 + k - 3 = 0 \\ \\ \\ \sf k = 2 \\ \\ \\ \sf 1 - k - 3 = 0 \\ \\ \\ \sf k = - 2 \\ \\ \\ \sf \fbox{ \sf k = ±2 }$

24.

If one of the two lines 3x^2 +kxy-y^2=0 bisects an angle between the co-ordinate axes, then k=?

Answer»

Step-by-step EXPLANATION:

$\sf {3x}^{2} - kxy - {y}^{2} = 0 \\ \\ \\ \sf divided \: \: by \: \: {x}^{2} \\ \\ \\ \sf 3 - \frac{ky}{x} - \frac{ {y}^{2} }{ {x}^{2} } = 0 \\ \\ \\ \sf y = mx \\ \\ \\ \sf \frac{y}{x} = m \\ \\ \\ \sf {m}^{2} + km - 3 = 0 \\ \\ \\ \sf \: one \: \: of \: \: the \: \: line \: \: bisect \: \: co - drdinate \: \: axis \\ \\ \\ \sf put \: \: m = 1 \: \: or \: \: m = - 1 \\ \\ \\ \sf 1 + k - 3 = 0 \\ \\ \\ \sf k = 2 \\ \\ \\ \sf 1 - k - 3 = 0 \\ \\ \\ \sf k = - 2 \\ \\ \\ \sf \fbox{ \sf k = ±2 }$

Discussion

25.	Write the following as rational number : (a) 0 (b) -67 (c) 14 (d) 3÷(-15)
Answer» rational NUMBAR is DIVISIBLE number so my answer is (d) so mark me BRAINLEIST.... please

25.

Write the following as rational number : (a) 0 (b) -67 (c) 14 (d) 3÷(-15)

Answer»

rational NUMBAR is DIVISIBLE number

so my answer is (d)

so mark me BRAINLEIST....

please

Discussion

26.	make out of 25 obtained by 8 students in mathematics are as follows: 21,7,13,15,8,20,21,24,find the mean and median of these marks
Answer» Step-by-step EXPLANATION: ANSWER Arrange the GIVEN DATA in ASCENDING order 12,15,15,17,17,17,19,19,19,19,19,21,21,21,23,23,23,23,25,25 Frequency DISTRIBUTION Table Marks 12 15 17 19 21 23 25 No. of students 1 2 3 5 3 4 2

26.

make out of 25 obtained by 8 students in mathematics are as follows: 21,7,13,15,8,20,21,24,find the mean and median of these marks

Answer»

Step-by-step EXPLANATION:

ANSWER

Arrange the GIVEN DATA in ASCENDING order

12,15,15,17,17,17,19,19,19,19,19,21,21,21,23,23,23,23,25,25

Frequency DISTRIBUTION Table

Marks

12

15

17

19

21

23

25

No. of students

1

2

3

5

3

4

2

Discussion

27.	Which of the following number is a perfect cube
Answer» ANSWER: Where is OPTION???????????????

27.

Which of the following number is a perfect cube

Answer»

ANSWER:

Where is OPTION???????????????

Discussion

28.	Hey , please answer me this question
Answer» Answer: 1.5 Step-by-step EXPLANATION: I THINK not SURE........

28.

Hey , please answer me this question

Answer»

Answer:

1.5

Step-by-step EXPLANATION:

I THINK not SURE........

Discussion

29.	12. 7x? +49x + 8414. 5x2 + 16x + 316. 9x² + 18x + 818. 2x2 + 3x - 9020. 3x2 - 14x + 822. 15x2 + 2x - 811. 6-x-x213. m² +17mn - 84115. 6x? + 17x +1217. 14x2 + 9x + 119. 2x2 + 11x - 2121. 18x2 + 3x - 1023. 6x2 + 11x-1025. 24x? - 41x + 1227. 6x2 -- 5x - 2129. 5x2 - 16x - 2131. 15x2 - x - 2833. 5x2 + 33xy - 14y?24. 30x2 + 7 x - 1526. 2x?. - 7 x - 1528. 10x2 - 9x - 730. 2x2 - x - 2132. 8a? - 27 ab + 9b234. 3x3 - 72-1010r2.
Answer» ANSWER: kuch JYADA NHI h questions

29.

12. 7x? +49x + 8414. 5x2 + 16x + 316. 9x² + 18x + 818. 2x2 + 3x - 9020. 3x2 - 14x + 822. 15x2 + 2x - 811. 6-x-x213. m² +17mn - 84115. 6x? + 17x +1217. 14x2 + 9x + 119. 2x2 + 11x - 2121. 18x2 + 3x - 1023. 6x2 + 11x-1025. 24x? - 41x + 1227. 6x2 -- 5x - 2129. 5x2 - 16x - 2131. 15x2 - x - 2833. 5x2 + 33xy - 14y?24. 30x2 + 7 x - 1526. 2x?. - 7 x - 1528. 10x2 - 9x - 730. 2x2 - x - 2132. 8a? - 27 ab + 9b234. 3x3 - 72-1010r2.

Answer»

ANSWER:

kuch JYADA NHI h questions

Discussion

30.	What are 2 days in which 24 hours do not complete
Answer» You only say please Step-by-step explanation: CAUSE in every DAY or there are no any days in which 25 hours don't complete ????? how is it possible please FRIEND say is ther anything like this

30.

What are 2 days in which 24 hours do not complete

Answer»

You only say please

Step-by-step explanation:

CAUSE in every DAY or there are no any days in which 25 hours don't complete

?????

how is

it possible

please FRIEND say is ther anything like this

Discussion

31.	जर एक वस्तू शेकडा 15 नफ्याऐवजी शेकडा 10 तोटयाने विकली तेव्हा 150 रूपये कमी मिळाले, तर त्या वस्तूचाविक्रीची किंमत किती?05400 (2)690 रु. (3)-600 रू.(4) 510 रू.
Answer» Answer: The BLIND spot is where the OPTIC nerve and blood VESSELS leave the eyeball. The optic nerve is connected to the brain. It carries IMAGES to the brain, where they're processed. This is how we know what we're seeing. Our eyes see the object or image, and our brain interprets it.

31.

जर एक वस्तू शेकडा 15 नफ्याऐवजी शेकडा 10 तोटयाने विकली तेव्हा 150 रूपये कमी मिळाले, तर त्या वस्तूचाविक्रीची किंमत किती?05400 (2)690 रु. (3)-600 रू.(4) 510 रू.

Answer»

Answer:

The BLIND spot is where the OPTIC nerve and blood VESSELS leave the eyeball. The optic nerve is connected to the brain. It carries IMAGES to the brain, where they're processed. This is how we know what we're seeing. Our eyes see the object or image, and our brain interprets it.

Discussion

32.	1 पॉइंट 5 मीटर भुजा वाली एक घनाकार पानी की टंकी का संपूर्ण पृष्ठीय क्षेत्रफल ज्ञात कीजिए
Answer» ANSWER: टंकी में पंप द्वारा भरे गए पानी का आयतन ज्ञात कीजिए। 5. दो गोलों के ...✌️✌️

32.

1 पॉइंट 5 मीटर भुजा वाली एक घनाकार पानी की टंकी का संपूर्ण पृष्ठीय क्षेत्रफल ज्ञात कीजिए

Answer»

ANSWER:

टंकी में पंप द्वारा भरे गए पानी का आयतन ज्ञात कीजिए। 5. दो गोलों के ...✌️✌️

Discussion

33.	If the sum of eleven consecutive natural number is 2761 , then the middle number is
Answer» Answer: 251 Middle NUMBER = 251 if The SUM of 11 consecutive natural NUMBERS is 2761. mark me as the brainliest Step-by-step explanation:

33.

If the sum of eleven consecutive natural number is 2761 , then the middle number is

Answer»

Answer:

251

Middle NUMBER = 251 if The SUM of 11 consecutive natural NUMBERS is 2761.

mark me as the brainliest

Step-by-step explanation:

Discussion

34.	The numbers which can not be expressed in the form p/q is called_________
Answer» ANSWER: IRRATIONAL numbers Hope it HELPS :)

34.

The numbers which can not be expressed in the form p/q is called_________

Answer»

ANSWER: IRRATIONAL numbers

Hope it HELPS :)

Discussion

35.	Q 9 rickshameThe Autre sickshem pare ina city, is asBRs, yra the Sule sequent distance etthere are time the first kilaneder, the farper km. Taking the distance coveredas oumerte it's linear equation
Answer» ANSWER: please GIVE the the question CORRECTLY i am not understanding Step-by-step explanation:

35.

Q 9 rickshameThe Autre sickshem pare ina city, is asBRs, yra the Sule sequent distance etthere are time the first kilaneder, the farper km. Taking the distance coveredas oumerte it's linear equation

Answer»

ANSWER:

please GIVE the the question CORRECTLY i am not understanding

Step-by-step explanation:

Discussion

36.	एक त्रिज्या और बराबर 7 सेंटीमीटर का लंब वृत्तीय बेलन एक गोले को पूर्ण घेरे हुए है ज्ञात कीजिए गोले का पृष्ठीय क्षेत्रफल बेलन का वक्र पृष्ठ क्षेत्रफल
Answer» ANSWER: SORRY I did not UNDERSTAND

36.

एक त्रिज्या और बराबर 7 सेंटीमीटर का लंब वृत्तीय बेलन एक गोले को पूर्ण घेरे हुए है ज्ञात कीजिए गोले का पृष्ठीय क्षेत्रफल बेलन का वक्र पृष्ठ क्षेत्रफल

Answer»

ANSWER:

SORRY I did not UNDERSTAND

Discussion

37.	How many consecutive natural numbers starting from 1 should be added to get 300?
Answer» LET S=1+2+3+⋯+9=9×102=45 Next 10 to 19 ⟹(1+0)+(1+1)+⋯(1+9)=1×10+S Next 20 to 29 (2+0)+(2+1)+⋯(2+9)=2×10+S ⋮ So, 1 to 99 (1×10+2×10+⋯9×10)+10S =10(1+2+3+⋯+9)+10S =10S+10S=20S(1) ⋮ Similarly, for 100 to 199 10×10+10(1+2+3+⋯+9)+10S =100+20S(2) And for 200 to 300 200+20S+3(3) So adding (1),(2),(3) SUM of digits of numbers from 1 to 300 =60S+303=60×45+303 =3003

37.

How many consecutive natural numbers starting from 1 should be added to get 300?

Answer»

LET S=1+2+3+⋯+9=9×102=45

Next 10 to 19

⟹(1+0)+(1+1)+⋯(1+9)=1×10+S

Next 20 to 29

(2+0)+(2+1)+⋯(2+9)=2×10+S

⋮

So, 1 to 99

(1×10+2×10+⋯9×10)+10S

=10(1+2+3+⋯+9)+10S

=10S+10S=20S(1)

⋮

Similarly, for 100 to 199

10×10+10(1+2+3+⋯+9)+10S

=100+20S(2)

And for 200 to 300

200+20S+3(3)

So adding (1),(2),(3)

SUM of digits of numbers from 1 to 300

=60S+303=60×45+303

=3003

Discussion

38.	M and 8-m. Find the length131m1. Ajay cut a 19-m-long rope into two pieces of lengths 3425the remaining rope.10
Answer» ANSWER: Step-by-step explanation: 98/5=191.6 13/4=4.25 17/2=8.5 so 4.25+8.5=12.75 hence 191-12.75 =179.75

38.

M and 8-m. Find the length131m1. Ajay cut a 19-m-long rope into two pieces of lengths 3425the remaining rope.10

Answer»

ANSWER:

Step-by-step explanation:

98/5=191.6

13/4=4.25

17/2=8.5

so

4.25+8.5=12.75

hence

191-12.75

=179.75

Discussion

39.	Subtrac 3/8 from _5/12
Answer» 86rexchi8iiihf CNN Answer: gcchkoouytreesd

39.

Subtrac 3/8 from _5/12

Answer»

86rexchi8iiihf CNN

Answer:

gcchkoouytreesd

Discussion

40.	Nixon is 5 years older than nicky how will you represent nixon age in term of nicky age
Answer» Answer: 5 x Step-by-step EXPLANATION: PLEASE MARK me as BRAINLIEST

40.

Nixon is 5 years older than nicky how will you represent nixon age in term of nicky age

Answer»

Answer:

5 x

Step-by-step EXPLANATION:

PLEASE MARK me as BRAINLIEST

Discussion

41.	In the no. "4(2)²" will 2 first be multiplied by 4 or will the square of 2 be multiplied by 4 later
Answer» Step-by-step explanation: the square of 2 be MULTIPLIED by 4 later

41.

In the no. "4(2)²" will 2 first be multiplied by 4 or will the square of 2 be multiplied by 4 later

Answer»

Step-by-step explanation:

the square of 2 be MULTIPLIED by 4 later

Discussion

42.	Can anybody answer this question and explain it
Answer» HEYA MATE OPTION A is the ANSWER

Discussion

43.	17.Let = : ≤ 5, ∈ ,= : = − 2 , 5 ≤ < 9, where . is the greatest integer function .Based on the above information, answer the followings.i. ( ∪ ) is equal to :a) 9 b) 0 c) 6 d)3ii. Total number of functions that can be defined from A to B is equal to:a) 5! b) 5! .4! c) 45 d) 54iii. ( × ) is equal to:a) 20! b) 202c) 220! d) ℎiv. If ( ) exceeds ( ) by , then is equal to:a) 4 b) 16 c) 32 d)8v. From the following which one is true?a) ⊆ b) ⊆ c) = d) ℎ
Answer» Answer: 11th Maths Relations and FUNCTIONS Some Functions and their Graphs Let [a] denotes the greates... MATHS Let [a] denotes the greatest integer LESS than or equal to a. GIVEN that the quadratic EQUATION x 2 +[a 2 −5a+b+4]x+b=0 has roots −5 and 1, which of the following is true This question has multiple correct options HARD Share Study later ANSWER Since −5 and 1 are the roots of the equation x 2 +[a 2 −5a+b+4]x+b=0 ∴−5+1=−[a 2 −5a+b+4]and−5×1=b ⇒[a 2 −5a+b+4]=4andb=−5 ⇒[a 2 −5a−5+4]=4 ⇒[a 2 −5a−1]=4⇒4≤a 2 −5a−1<5 ⇒a 2 −5a−1≥4anda 2 −5a−1<5 ⇒a 2 −5a−5≥0anda 2 −5a−6<0 ⇒a≤ 2 5−3 5 ora≥ 2 5+3 5 and−1,6 ∴aϵ(−1, 2 5−3 5 )∪( 2 5+3 5 ,6)

43.

17.Let = : ≤ 5, ∈ ,= : = − 2 , 5 ≤ < 9, where . is the greatest integer function .Based on the above information, answer the followings.i. ( ∪ ) is equal to :a) 9 b) 0 c) 6 d)3ii. Total number of functions that can be defined from A to B is equal to:a) 5! b) 5! .4! c) 45 d) 54iii. ( × ) is equal to:a) 20! b) 202c) 220! d) ℎiv. If ( ) exceeds ( ) by , then is equal to:a) 4 b) 16 c) 32 d)8v. From the following which one is true?a) ⊆ b) ⊆ c) = d) ℎ

Answer»

Answer:

11th

Maths

Relations and FUNCTIONS

Some Functions and their Graphs

Let [a] denotes the greates...

MATHS

Let [a] denotes the greatest integer LESS than or equal to a. GIVEN that the quadratic EQUATION x

2

+[a

2

−5a+b+4]x+b=0 has roots −5 and 1, which of the following is true

This question has multiple correct options

HARD

Share

Study later

ANSWER

Since −5 and 1 are the roots of the equation

x

2

+[a

2

−5a+b+4]x+b=0

∴−5+1=−[a

2

−5a+b+4]and−5×1=b

⇒[a

2

−5a+b+4]=4andb=−5

⇒[a

2

−5a−5+4]=4

⇒[a

2

−5a−1]=4⇒4≤a

2

−5a−1<5

⇒a

2

−5a−1≥4anda

2

−5a−1<5

⇒a

2

−5a−5≥0anda

2

−5a−6<0

⇒a≤

2

5−3

5

ora≥

2

5+3

5

and−1,6

∴aϵ(−1,

2

5−3

5

)∪(

2

5+3

5

,6)

Discussion

44.	Lest number to which if 7 be added, the number obtained be exactly divisible by 25, 45,13. Determine the number nearest to 1,00,000 but greater than 10,000 which is exactly divisible by each of 8, 1512. Find the least number of 5 digits which is exactly divisible by 10, 15, 20 and 25.and 21.14. The product of two numbers is 2.160 and their HCF is 12. Find their LM
Answer» ANSWER: PLS pls pls FOLLOW me pls pls pls..... Step-by-step EXPLANATION: pls pls pls pls pls pls pls pls pls

44.

Lest number to which if 7 be added, the number obtained be exactly divisible by 25, 45,13. Determine the number nearest to 1,00,000 but greater than 10,000 which is exactly divisible by each of 8, 1512. Find the least number of 5 digits which is exactly divisible by 10, 15, 20 and 25.and 21.14. The product of two numbers is 2.160 and their HCF is 12. Find their LM

Answer»

ANSWER:

PLS pls pls FOLLOW me pls pls pls.....

Step-by-step EXPLANATION:

pls pls pls pls pls pls pls pls pls

Discussion

45.	Set of candidates who passed in mathematics and chemistry, but not in physics:
Answer» ANSWER: Don't KNOW....... Step-by-step EXPLANATION: And don't FORGET to FOLLOW me

45.

Set of candidates who passed in mathematics and chemistry, but not in physics:

Answer»

ANSWER:

Don't KNOW.......

Step-by-step EXPLANATION:

And don't FORGET to FOLLOW me

Discussion

46.	Xy-m=c hellppppp meeee eplsss
Answer» ANSWER: Which help are you want? Step-by-step explanation: PLEASE like my ANSWERS 5 {or} how much is it useful to you

46.

Xy-m=c hellppppp meeee eplsss

Answer»

ANSWER:

Which help are you want?

Step-by-step explanation:

PLEASE like my ANSWERS 5 {or} how much is it useful to you

Discussion

47.	After allowing two successive discounts of 20% and 25% , a watch sold for Rs. 6000. The marked price of the watch is?
Answer» Answer: 9600 Step-by-step EXPLANATION: DISCOUNT PRICE=(1-20%)(1-25%)× 6000 =.8×.75×6000 =3600 mp = sp+discount price =6000+3600 =9600

47.

After allowing two successive discounts of 20% and 25% , a watch sold for Rs. 6000. The marked price of the watch is?

Answer»

Answer:

9600

Step-by-step EXPLANATION:

DISCOUNT PRICE=(1-20%)(1-25%)× 6000

=.8×.75×6000

=3600

mp = sp+discount price

=6000+3600

=9600

Discussion

48.	What is the diameter of solid right circular cylinder whose height is 6 cm
Answer» Answer: *Volume of cylinder of radius r and HEIGHT h is given by =πr* *Volume of cylinder of radius r and height h is given by =πr 2* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius =* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter =* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 2* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume =* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 7* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722 ×(3)* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722 ×(3) 2* *Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722 ×(3) 2 ×14=22×9×2=44×9=396cm*

48.

What is the diameter of solid right circular cylinder whose height is 6 cm

Answer»

Answer:

Volume of cylinder of radius r and HEIGHT h is given by =πr

Volume of cylinder of radius r and height h is given by =πr 2

Volume of cylinder of radius r and height h is given by =πr 2 h as radius =

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter =

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 2

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume =

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 7

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722 ×(3)

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722 ×(3) 2

Volume of cylinder of radius r and height h is given by =πr 2 h as radius = 2Diameter = 26 =3cm⇒ Volume = 722 ×(3) 2 ×14=22×9×2=44×9=396cm

Discussion

49.	Collection of all persons of India
Answer» ANSWER: WHAT KIND OF PERSONS Step-by-step EXPLANATION:

49.

Collection of all persons of India

Answer»

ANSWER:

WHAT KIND OF PERSONS

Step-by-step EXPLANATION:

Discussion

50.	By using suitable identity evaluate (96)2
Answer» ${96}^{2} = {(100 - 4)}^{2} \\ \\ \\ {96}^{2} = {100}^{2} + {4}^{2} - 800 \\ \\ {96}^{2} = 10000 + 16 - 800 \\ \\ {96}^{2} = 9216$

50.

By using suitable identity evaluate (96)2

Answer»

${96}^{2} = {(100 - 4)}^{2} \\ \\ \\ {96}^{2} = {100}^{2} + {4}^{2} - 800 \\ \\ {96}^{2} = 10000 + 16 - 800 \\ \\ {96}^{2} = 9216$

Discussion

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Tan=

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