332354 + Interview Questions in Secondary School in Math

1.	Use ur mind carefully
Answer» Answer: 888 + 88 + 8 + 8 + 8 = 1000

1.

Use ur mind carefully

Answer»

Answer:

888 + 88 + 8 + 8 + 8 = 1000

Discussion

2.	check whether the given values are the solution of given equation of x square - 3 x + 20 is equal to zero,x is equal to minus 2,11
Answer» ANSWER: L don't KNOW this answer

2.

check whether the given values are the solution of given equation of x square - 3 x + 20 is equal to zero,x is equal to minus 2,11

Answer»

ANSWER:

L don't KNOW this answer

Discussion

3.	Please answer this question fast I am preparing for exam
Answer» A. Symmetric Step-by-step EXPLANATION: PLEASE MARK BRAINLIEST

3.

Please answer this question fast I am preparing for exam

Answer»

A. Symmetric

Step-by-step EXPLANATION:

PLEASE MARK BRAINLIEST

Discussion

4.	Sin A/1+ cos A=sec A +cot A
Answer» Answer: i hope this question would be LIKE that 1/sinA+cos A 1/sin A+ COSA sinA/sinA cosec A + COT A Step-by-step explanation: PLEASE tell me the right question and REPOST it again sorry for my MISTAKE

4.

Sin A/1+ cos A=sec A +cot A

Answer»

Answer:

i hope this question would be LIKE that

1/sinA+cos A

1/sin A+ COSA sinA/sinA

cosec A + COT A

Step-by-step explanation:

PLEASE tell me the right question and REPOST it again

sorry for my MISTAKE

Discussion

5.	Strong mortar is made from sand and cement in the ratio 3 : 1.a. How much cement is needed to mix with 90 kg of sand?b. How much sand is needed to mix with 40 kg of cement?no 25 nrn inllies 10are tranical and
Answer» 30Kgs of cement is NEEDED to MIX with 90 kgs of sand 120Kgs of sand is needed to mix with 40Kgs of cement Hope it helps:)

5.

Strong mortar is made from sand and cement in the ratio 3 : 1.a. How much cement is needed to mix with 90 kg of sand?b. How much sand is needed to mix with 40 kg of cement?no 25 nrn inllies 10are tranical and

Answer»

30Kgs of cement is NEEDED to MIX with 90 kgs of sand
120Kgs of sand is needed to mix with 40Kgs of cement

Hope it helps:)

Discussion

6.	Subtract the following8k from -6k
Answer» WHENEVER you are ASKED to SUBTRACT a from b subtract b-a -6k-8k -14k

6.

Subtract the following8k from -6k

Answer»

WHENEVER you are ASKED to SUBTRACT a from b

subtract b-a

-6k-8k

-14k

Discussion

7.	A milk man buys milk rupees 5 per litre and sells it rupees 6 per litre. How much water is mixed by him in one litre milk that he gets the profit of 60%?please explain
Answer» Answer: 40•/• Step-by-step explanation: he BUYS 1 l milk for $5 he sells for$6 60•/•profit so 100 _60=40 so 40•/• he MIXES the water

7.

A milk man buys milk rupees 5 per litre and sells it rupees 6 per litre. How much water is mixed by him in one litre milk that he gets the profit of 60%?please explain

Answer»

Answer:

40•/•

Step-by-step explanation:

he BUYS 1 l milk for $5

he sells for$6

60•/•profit so 100 _60=40

so 40•/• he MIXES the water

Discussion

8.	How many 3 digit numbers are divisible by 7
Answer» ANSWER: ywhejjdkrjrueuee6eyeye6e6e77w38e8euxuxuhxy2u27w7eyr6373iehshshdtdtidtudtidi5e85r85d68ryDCtixyixyiciyfoyfoyf9f

8.

How many 3 digit numbers are divisible by 7

Answer»

ANSWER:

ywhejjdkrjrueuee6eyeye6e6e77w38e8euxuxuhxy2u27w7eyr6373iehshshdtdtidtudtidi5e85r85d68ryDCtixyixyiciyfoyfoyf9f

Discussion

9.	3) Find the principal:b) SI: 450 Time: 5 yearsRate:6%Please explain too. First to answer will get the brainiest.
Answer» Step-by-step explanation: 1st YEAR SI = (4500.06) = 27 ₹ same for NEXT 4 year so that si of 5 year = 275= 135₹

9.

3) Find the principal:b) SI: 450 Time: 5 yearsRate:6%Please explain too. First to answer will get the brainiest.

Answer»

Step-by-step explanation:

1st YEAR SI = (450*0.06) = 27 ₹

same for NEXT 4 year

so that si of 5 year = 27*5= 135₹

Discussion

10.	If a= 4/5 and. b=3/10 then find \|a+b\| < \| a\| + \| b\|
Answer» Answer: 98554 09030hhhhhhhhhhjhhhjhjhjgu

10.

If a= 4/5 and. b=3/10 then find |a+b| < | a| + | b|

Answer»

Answer:

98554 09030hhhhhhhhhhjhhhjhjhjgu

Discussion

11.	1. Find the zeroes of the following quadraticpolynomials by factorisation method and verifythe relationship between the zeroes and thecoefficients of the polynomial :
Answer» ANSWER: jjjjeieid8e8ieiew871u6r67e7eye747

11.

1. Find the zeroes of the following quadraticpolynomials by factorisation method and verifythe relationship between the zeroes and thecoefficients of the polynomial :

Answer»

ANSWER:

jjjjeieid8e8ieiew871u6r67e7eye747

Discussion

12.	The sum of the numbersis - 1/3 olf one of the mostnumbers is - 12/3, findI the other number.
Answer» Answer: 11/3 Step-by-step EXPLANATION: -12/3 + X = -1/3 X = -1/3 + 12/3 = 11/3

12.

The sum of the numbersis - 1/3 olf one of the mostnumbers is - 12/3, findI the other number.

Answer»

Answer:

11/3

Step-by-step EXPLANATION:

-12/3 + X = -1/3

X = -1/3 + 12/3 = 11/3

Discussion

13.	Please solve it:(-8)/0
Answer» ANSWER: INFINITE Step-by-step EXPLANATION:

13.

Please solve it:(-8)/0

Answer»

ANSWER: INFINITE

Step-by-step EXPLANATION:

Discussion

14.	-6/7+-5/6+-4/9+-15/7
Answer» Answer: 6/5:15/7:28/9 is 378 : 675 : 980 . Step-by-step explanation: Given data: \FRAC{6}{5} 5 6 : \frac{15}{7} 7 15 : \frac{28}{9} 9 28 To find: simplying the given RATIO of fractions Solution: \frac{6}{5} 5 6 : \frac{15}{7} 7 15 : \frac{28}{9} 9 28 taking L.C.M. of the denominators of given fractions i.e., L.C.M of (5,7,9) = 5 * 7 * 9 = 315 and then multiplying the L.C.M = 315 with each of the fractions = \frac{6}{5} 5 6 * 315 : \frac{15}{7} 7 15 315 : \frac{28}{9} 9 28 315 = 6 * 63 : 15 * 45 : 28 * 35 = 378 : 675 : 980 Thus, on simplifying \frac{6}{5} 5 6 : \frac{15}{7} 7 15 : \frac{28}{9} 9 28 we get the ratio as 378 : 675 : 980. Learn More: Simplify.......................... brainly.in/question/4226386 Simplify the following :- a)5/632/253/2 b)24/276/514/8 c)11/2515/224/9 d)18/107/812/49 e)1/24/53/76/5 f)2/39/1112/1326/63 brainly.in/question/4148085

14.

-6/7+-5/6+-4/9+-15/7

Answer»

Answer:

6/5:15/7:28/9 is 378 : 675 : 980 .

Step-by-step explanation:

Given data:

\FRAC{6}{5}

5

6

: \frac{15}{7}

7

15

: \frac{28}{9}

9

28

To find: simplying the given RATIO of fractions

Solution:

\frac{6}{5}

5

6

: \frac{15}{7}

7

15

: \frac{28}{9}

9

28

taking L.C.M. of the denominators of given fractions i.e., L.C.M of (5,7,9) = 5 * 7 * 9 = 315 and then multiplying the L.C.M = 315 with each of the fractions

= \frac{6}{5}

5

6

* 315 : \frac{15}{7}

7

15

*315 : \frac{28}{9}

9

28

* 315

= 6 * 63 : 15 * 45 : 28 * 35

= 378 : 675 : 980

Thus, on simplifying \frac{6}{5}

5

6

: \frac{15}{7}

7

15

: \frac{28}{9}

9

28

we get the ratio as 378 : 675 : 980.

Learn More:

Simplify..........................

brainly.in/question/4226386

Simplify the following :-

a)5/6*32/25*3/2

b)24/27*6/5*14/8

c)11/25*15/22*4/9

d)18/10*7/8*12/49

e)1/2*4/5*3/7*6/5

f)2/3*9/11*12/13*26/63

brainly.in/question/4148085

Discussion

15.	9^0 + 9^-1 - 9^-2 + 9^1/2 - 9^-1/2
Answer» Answer: 1.0002569 Step-by-step explanation: good QUESTION BRO NEXT ask some EASY QUESTIONS

15.

9^0 + 9^-1 - 9^-2 + 9^1/2 - 9^-1/2

Answer»

Answer:

1.0002569

Step-by-step explanation:

good QUESTION BRO NEXT ask some EASY QUESTIONS

Discussion

16.	in a village, there are 7 men each man has 7 wives each wife has 7 daughters each daughter has 7 brothers what is the total population in that village?
Answer» Answer: TOTAL population is 154 Step-by-step explanation: there are 7 men, so total is 7 each men has 7 WIFE, so 7x7=49 each wife has 7 DAUGHTER, so 7x7=49 each daughter has 7 sister, so 7x7=49 adding all these we get 154.

16.

in a village, there are 7 men each man has 7 wives each wife has 7 daughters each daughter has 7 brothers what is the total population in that village?

Answer»

Answer:

TOTAL population is 154

Step-by-step explanation:

there are 7 men, so total is 7

each men has 7 WIFE, so 7x7=49

each wife has 7 DAUGHTER, so 7x7=49

each daughter has 7 sister, so 7x7=49

adding all these we get 154.

Discussion

17.	9k² -22k -20= 0 factorise
Answer» ANSWER: HOPE it MAY HELP U.......

17.

9k² -22k -20= 0 factorise

Answer»

ANSWER:

HOPE it MAY HELP U.......

Discussion

18.	Find zeros of2x² +5x+1
Answer» ANSWER: I don't KNOW how to CONTINUE

18.

Find zeros of2x² +5x+1

Answer»

ANSWER:

I don't KNOW how to CONTINUE

Discussion

19.	In the given figure AB is parallel to FC angle B=70° and angle FDE=148° . find value of a and b
Answer» ANSWER: I don't KNOW SORRY BRO sorry sorry sorry Step-by-step EXPLANATION: sorry

19.

In the given figure AB is parallel to FC angle B=70° and angle FDE=148° . find value of a and b

Answer»

ANSWER:

I don't KNOW SORRY BRO sorry sorry sorry

Step-by-step EXPLANATION:

sorry

Discussion

20.	Solve through division:A) 1/7
Answer» 0.1428571429 is the correct ANSWER 1 is less than 7 so we have to put 0 in dividend PLACE and in quotient place 0.

20.

Solve through division:A) 1/7

Answer»

0.1428571429 is the correct ANSWER

1 is less than 7 so we have to put 0 in dividend PLACE and in quotient place 0.

Discussion

21.	find the area of path 2m wide laid inside along the boundary of a rectangle park if dimension 10m into 60m find the cost of travelling it at the rate rs30 per square metre
Answer» Answer: the WORLD of the most important thing is that the GOVERNMENT of India LIMITED to the NEXT few days

21.

find the area of path 2m wide laid inside along the boundary of a rectangle park if dimension 10m into 60m find the cost of travelling it at the rate rs30 per square metre

Answer»

Answer:

the WORLD of the most important thing is that the GOVERNMENT of India LIMITED to the NEXT few days

Discussion

22.	7. Solve the equations by using the method of cross multiplication:x – y = 75x + 12y =7
Answer» ANSWER: SEE the PICTURES Step-by-step EXPLANATION:

22.

7. Solve the equations by using the method of cross multiplication:x – y = 75x + 12y =7

Answer»

ANSWER: SEE the PICTURES

Step-by-step EXPLANATION:

Discussion

23.	Please answer these questions, please.
Answer» ANSWER: *your* *answer* *ATTACHED* in *the* *PHOTO*

23.

Please answer these questions, please.

Answer»

ANSWER:

your answer ATTACHED in the PHOTO

Discussion

24.	Find the value of x - y and y - x = 2/3 , y = 5/9 are they equal
Answer» ANSWER: Step-by-step EXPLANATION: x-y = 2/3-5/9 = 6-5/9 = 1/9 y-x = 5/9-2/3 = 5-6/9 = -1/9 Please, REFER ATTACHMENT

24.

Find the value of x - y and y - x = 2/3 , y = 5/9 are they equal

Answer»

ANSWER:

Step-by-step EXPLANATION:

x-y

= 2/3-5/9

= 6-5/9

= 1/9

y-x

= 5/9-2/3

= 5-6/9

= -1/9

Please, REFER ATTACHMENT

Discussion

25.	Find the LCM and HCF of the following integers by applying the prime factorizationmethod. i. 12 ii. 30 iii. 15
Answer» 1 Answer:4 2 Answer:5 3 Answer:5

25.

Find the LCM and HCF of the following integers by applying the prime factorizationmethod. i. 12 ii. 30 iii. 15

Answer»

1 Answer:4

2 Answer:5

3 Answer:5

Discussion

26.	Express in the form 1 : ngive n as a decimal 20:15
Answer» ANSWER: = 1 : 0.75 answer is this

26.

Express in the form 1 : ngive n as a decimal 20:15

Answer»

ANSWER:

= 1 : 0.75 answer is this

Discussion

27.	Three aeroplane fly from Bombay to Landon. Odds in favour of their arriving safely are 2:1,3:1 and 4:1.find the probability that they all arrive safely
Answer» <P>Step-by-step EXPLANATION: P(A) =2/2+1=2/3 P(B)=3/3+1=3/4 P(C)=4/4+1=4/5 P(ABC)=2/33/44/5=2/5

27.

Three aeroplane fly from Bombay to Landon. Odds in favour of their arriving safely are 2:1,3:1 and 4:1.find the probability that they all arrive safely

Answer»

<P>Step-by-step EXPLANATION:

P(A) =2/2+1=2/3

P(B)=3/3+1=3/4

P(C)=4/4+1=4/5

P(ABC)=2/3*3/4*4/5=2/5

Discussion

28.	A rational number between 1/7and2/7 is 1/4 b) 2/21 c) 5/14 d) 5/21
Answer» Answer: 1/7+2/7=3/7 3/7÷2=3/14 is the RATIONAL NUMBER between these VALUES

28.

A rational number between 1/7and2/7 is 1/4 b) 2/21 c) 5/14 d) 5/21

Answer»

Answer:

1/7+2/7=3/7

3/7÷2=3/14 is the RATIONAL NUMBER between these VALUES

Discussion

29.	26. Make a model of maths using the waste recycled materials ofyour home.*****
Answer» Answer: hope it's helpful and Mark me as brainlist... Step-by-step explanation: Tiny Tot Time CAPSULE. Remember what you were LIKE when you were a tiny tot by creating a Tiny Tot Time Capsule. ... Creative Recycled DIY Bird Feeder. ... Bottle Cap Fishies. ... Water Bottle Fish Craft. ... DESERT In A Box: Biome Diorama. ... Styrofoam Cup Blooms. ... Colorful Coffee Filter BUTTERFLY. ... Bottle Cap Art Wind Chime.

29.

26. Make a model of maths using the waste recycled materials ofyour home.*****

Answer»

Answer:

hope it's helpful and Mark me as brainlist...

Step-by-step explanation:

Tiny Tot Time CAPSULE. Remember what you were LIKE when you were a tiny tot by creating a Tiny Tot Time Capsule. ...

Creative Recycled DIY Bird Feeder. ...

Bottle Cap Fishies. ...

Water Bottle Fish Craft. ...

DESERT In A Box: Biome Diorama. ...

Styrofoam Cup Blooms. ...

Colorful Coffee Filter BUTTERFLY. ...

Bottle Cap Art Wind Chime.

Discussion

30.	Solve this following problem
Answer» ANSWER: a^-7×b^-3×c^-2×d is the answer

30.

Solve this following problem

Answer»

ANSWER:

a^-7×b^-3×c^-2×d is the answer

Discussion

31.	Solve by division: 1/7 ( 1÷7 )
Answer» HEY MATE here is UR ANSWER = 1/7×1/7=1/49. hope it HELPS. ☆☆☆

31.

Solve by division: 1/7 ( 1÷7 )

Answer»

HEY MATE here is UR ANSWER =

1/7×1/7=1/49.

hope it HELPS.

☆☆☆

Discussion

32.	Fill in the blanks (-204)×___=(-204)
Answer» ANSWER: (-204) * 1 =( -204)... MARK as BRAINLIEST

32.

Fill in the blanks (-204)×___=(-204)

Answer»

ANSWER:

(-204) * 1 =( -204)...

MARK as BRAINLIEST

Discussion

33.	3. Find the area of a rhombus if :a) Each side is 16 m and height is 9 m b) Each diagonals are 20 cm and 18 c
Answer» Answer: a)144 m² b)180 cm² Step-by-step explanation: a) Like any parallelogram, the area of a rhombus can be found by multiplying base with height. In this case, Base = 16 m Height = 9 m Area = Base X Height = 16 x 9 m² = 144 m² b) LET the diagonals be D1 and d2. For a rhombus, area can also be given by- $\frac{1}{2\\}$ x d1 x d2 = 0.5 x 20 CM x 18 cm (In this case) = 180 cm²

33.

3. Find the area of a rhombus if :a) Each side is 16 m and height is 9 m b) Each diagonals are 20 cm and 18 c

Answer»

Answer:

a)144 m²

b)180 cm²

Step-by-step explanation:

a) Like any parallelogram, the area of a rhombus can be found by multiplying base with height. In this case,

Base = 16 m

Height = 9 m

Area = Base X Height

= 16 x 9 m²

= 144 m²

b) LET the diagonals be D1 and d2. For a rhombus, area can also be given by-

$\frac{1}{2\\}$ x d1 x d2

= 0.5 x 20 CM x 18 cm (In this case)

= 180 cm²

Discussion

34.	For every pound a company spends on advertising it spends on its website express the amount spent on advertising to its website as ratio in its simplest form
Answer» Answer: 1:1 = 1 Step-by-step explanation: Advertising:Website 1 POUND:1 pound = 1:1 This can be EXPRESSED in fraction as $\frac{1}{1}$ , which can be simplified to 1.

34.

For every pound a company spends on advertising it spends on its website express the amount spent on advertising to its website as ratio in its simplest form

Answer»

Answer:

1:1 = 1

Step-by-step explanation:

Advertising:Website

1 POUND:1 pound

= 1:1

This can be EXPRESSED in fraction as $\frac{1}{1}$ , which can be simplified to 1.

Discussion

35.	Is -15/11 and -15/-33 are equivalent rational number
Answer» Answer: No. For TWO rational numbers to be equivalent, the simplest form of both the numbers must be same. Step-by-step EXPLANATION: Hope you got your answer. PLEASE MARK MY ANSWER AS BRAINLIEST.

35.

Is -15/11 and -15/-33 are equivalent rational number

Answer»

Answer:

No. For TWO rational numbers to be equivalent, the simplest form of both the numbers must be same.

Step-by-step EXPLANATION:

Hope you got your answer.

PLEASE MARK MY ANSWER AS BRAINLIEST.

Discussion

36.	Simplify 615+ 2143- 1869 in class 4th
Answer» Answer:889 Step-by-step EXPLANATION:

36.

Simplify 615+ 2143- 1869 in class 4th

Answer»

Answer:889

Step-by-step EXPLANATION:

Discussion

37.	Sin A/1+cos A=sec A -cot A
Answer» $\huge{\underline{\underline{\red{♡Solution→}}}}$ $\frac{sin \: a}{<klux>1</klux> + cos \: a} =cosec \: a - cot \: a$ $\bold{\huge{\underline{\underline{\rm{ LHS :}}}}}$ $= \frac{sin \: a}{1 + cos \: a}$ DIVIDE and MULTIPLY by 1 - cos a $= \frac{sin \: a}{1 + cos \: a} \times \frac{1 - cos \: a}{1 - cos \: a}$ $= \frac{sin \: a(1 - cos \: a)}{(1 - cos \: a)(1 + cos \: a)} \\ = \frac{sin \: a - sina \: cos \: a}{1 - {cos}^{2} a} \\ = \frac{sin \: a - sin \: a \: cos \: a}{ {sin}^{2}a } \\ = \frac{sin \: a}{ {sin}^{2}a } - \frac{sin \: a \: cos \: a}{ {sin}^{2} a} \\ = \frac{1}{sin \: a} - \frac{cos \: a}{sin \: a}$ $= cosec \: a - cot \: a$ $\bold{\huge{\underline{\underline{\rm{ RHS ↑}}}}}$ *MARK as Brainliest !! ✨✨*

37.

Sin A/1+cos A=sec A -cot A

Answer»

$\huge{\underline{\underline{\red{♡Solution→}}}}$

$\frac{sin \: a}{<klux>1</klux> + cos \: a} =cosec \: a - cot \: a$

$\bold{\huge{\underline{\underline{\rm{ LHS :}}}}}$

$= \frac{sin \: a}{1 + cos \: a}$

DIVIDE and MULTIPLY by 1 - cos a

$= \frac{sin \: a}{1 + cos \: a} \times \frac{1 - cos \: a}{1 - cos \: a}$

$= \frac{sin \: a(1 - cos \: a)}{(1 - cos \: a)(1 + cos \: a)} \\ = \frac{sin \: a - sina \: cos \: a}{1 - {cos}^{2} a} \\ = \frac{sin \: a - sin \: a \: cos \: a}{ {sin}^{2}a } \\ = \frac{sin \: a}{ {sin}^{2}a } - \frac{sin \: a \: cos \: a}{ {sin}^{2} a} \\ = \frac{1}{sin \: a} - \frac{cos \: a}{sin \: a}$

$= cosec \: a - cot \: a$

$\bold{\huge{\underline{\underline{\rm{ RHS ↑}}}}}$

MARK as Brainliest !! ✨✨

Discussion

38.	Find two rational numbers between 1and2
Answer» Answer: ⇒As we have to find 5 RATIONAL number between 1 and 2 ⇒We can consider=1.1,1.2,1.3,1.4,1.5 = 10 11 , 10 12 , 10 13 , 10 14 , 10 15 = 10 11 , 5 6 , 10 13 , 5 7 , 2 3 .

38.

Find two rational numbers between 1and2

Answer»

Answer:

⇒As we have to find 5 RATIONAL number between 1 and 2

⇒We can consider=1.1,1.2,1.3,1.4,1.5

=

10

11

,

10

12

,

10

13

,

10

14

,

10

15

=

10

11

,

5

6

,

10

13

,

5

7

,

2

3

.

Discussion

39.	Angle each measure 80 degree what is the measure of fourth angle
Answer» ANSWER: And since the sum of the 4 ANGLES of the QUADRILATERAL is equal to 360 DEGREES. So the 4th angle will be 120 degrees

39.

Angle each measure 80 degree what is the measure of fourth angle

Answer»

ANSWER:

And since the sum of the 4 ANGLES of the QUADRILATERAL is equal to 360 DEGREES. So the 4th angle will be 120 degrees

Discussion

40.	The average mark scored by 50 students in a class were calculated to be 38.later it found ,that marks of two students were wrongly copied as 34&23 instead of 43 and 32. Find correct average marks
Answer» Gien that, Average marks of 50 STUDENTS = 38. Now, Mean = (Sum of all observations)/(Total NUMBER of observations) Let us assume that the sum of all observations is M. So, ⇒ 38 = M/50 ⇒ M = 50(38) ⇒ M = 1900 Also, marks of two students were wrongly copied as 34 and 23 instead of 43 and 32. Sum of all observations = 1900 Wrongly copied numbers = 34 and 23 Subtract the wrongly copied numbers from the sum of all observations. ⇒ 1900 - (34 + 23) ⇒ 1900 - 57 = 1843 New numbers = 43 and 32 Add the new numbers to the sum of all observations ⇒ 1843 + (43 + 32) ⇒ 1843 + 75 = 1918 From above calculations, we have new sum = 1918 Now, New mean = (New sum)/(Total number of observations) ⇒ 1918/50 = 38.36

40.

The average mark scored by 50 students in a class were calculated to be 38.later it found ,that marks of two students were wrongly copied as 34&23 instead of 43 and 32. Find correct average marks

Answer»

Gien that, Average marks of 50 STUDENTS = 38.

Now,

Mean = (Sum of all observations)/(Total NUMBER of observations)

Let us assume that the sum of all observations is M.

So,

⇒ 38 = M/50

⇒ M = 50(38)

⇒ M = 1900

Also, marks of two students were wrongly copied as 34 and 23 instead of 43 and 32.

Sum of all observations = 1900

Wrongly copied numbers = 34 and 23

Subtract the wrongly copied numbers from the sum of all observations.

⇒ 1900 - (34 + 23)

⇒ 1900 - 57 = 1843

New numbers = 43 and 32

Add the new numbers to the sum of all observations

⇒ 1843 + (43 + 32)

⇒ 1843 + 75 = 1918

From above calculations, we have new sum = 1918

Now,

New mean = (New sum)/(Total number of observations)

⇒ 1918/50 = 38.36

Discussion

41.	Find the product of the place value of 5 in 250859.
Answer» ANSWER: Place value of 1st 5= 50000 Place value of 2ND 5= 50 Product=50000×50 = 2500000 Step by step explanation: Hope you GOT your answer. PLEASE MARK MY ANSWER AS BRAINLIEST.

41.

Find the product of the place value of 5 in 250859.

Answer»

ANSWER:

Place value of 1st 5= 50000

Place value of 2ND 5= 50

Product=50000×50

= 2500000

Step by step explanation:

Hope you GOT your answer.

PLEASE MARK MY ANSWER AS BRAINLIEST.

Discussion

42.	Euclid division algorithm to find the highest common factor 340and 412
Answer» Euclid's division LEMMA a = 412, b = 340 a = bq + r 412 = 340(1) + 72 340 = 72(4) + 52 72 = 52(1) + 20 52 = 20(2) + 12 20 = 12(1) + 8 12 = 8(1) + 4 8 = 4(2) + 0 Therefore HCF of 412 and 340 is 4.

42.

Euclid division algorithm to find the highest common factor 340and 412

Answer»

Euclid's division LEMMA

a = 412, b = 340

a = bq + r

412 = 340(1) + 72

340 = 72(4) + 52

72 = 52(1) + 20

52 = 20(2) + 12

20 = 12(1) + 8

12 = 8(1) + 4

8 = 4(2) + 0

Therefore HCF of 412 and 340 is 4.

Discussion

43.	Find a rational number between -1/4 and 1
Answer» ANSWER: 1/4+1=5/4 =5/4÷2=5/8 is the answer

43.

Find a rational number between -1/4 and 1

Answer»

ANSWER:

1/4+1=5/4

=5/4÷2=5/8 is the answer

Discussion

44.	1/√9-√8 is equal to 1/2(3-2√2)
Answer» ANSWER: what question do U want to ask US

44.

1/√9-√8 is equal to 1/2(3-2√2)

Answer»

ANSWER:

what question do U want to ask US

Discussion

45.	60 - 60 = 59 is it possible or not ?If this is possible, than how is it possible ?
Answer» Answer: Yes it is POSSIBLE!! Step-by-step explanation: It is possible when the first 60 represents minutes and the second 60 represents the SECONDS. If we SUBTRACT 60 seconds from 60 minutes we get 59 minutes. Same can be done when 60 mins subtracted from 60 HOURS. 60 seconds subtracted by 60 minutes will give 59 minutes......... HOPE THIS HELPS!!

45.

60 - 60 = 59 is it possible or not ?If this is possible, than how is it possible ?

Answer»

Answer:

Yes it is POSSIBLE!!

Step-by-step explanation:

It is possible when the first 60 represents minutes and the second 60 represents the SECONDS. If we SUBTRACT 60 seconds from 60 minutes we get 59 minutes. Same can be done when 60 mins subtracted from 60 HOURS. 60 seconds subtracted by 60 minutes will give 59 minutes.........

HOPE THIS HELPS!!

Discussion

46.	For any rational number x,x×5=xPlus x plus ______= ______ times
Answer» ANSWER: 3x, 5 TIMES is the RIGHT answer of this QUESTION.

46.

For any rational number x,x×5=xPlus x plus = times

Answer»

ANSWER:

3x, 5 TIMES is the RIGHT answer of this QUESTION.

Discussion

47.	1lakh = --------------thousand
Answer» Answer: 100 THOUSAND.............

47.

1lakh = --------------thousand

Answer»

Answer:

100 THOUSAND.............

Discussion

48.	How many elements are there?
Answer» Answer: there are 3 ELEMENTS PLZ mark as brainliest

48.

How many elements are there?

Answer»

Answer:

there are 3 ELEMENTS

PLZ mark as brainliest

Discussion

49.	Express - 3 by 5 rational number between nominated 35
Answer» ANSWER: FIRST mark m E a s B rainlist Step-by-step explanation:

49.

Express - 3 by 5 rational number between nominated 35

Answer»

ANSWER:

FIRST mark m E a s B rainlist

Step-by-step explanation:

Discussion

50.	25% percent of a number is equal to 40% percent of another number. What is the ratio between the first and the second number respectively?
Answer» Answer: 8:5 Step-by-step explanation: ${\underline{{\text{Given}}}}$ 25% of one no. is EQUAL to 40% 2ND no. ${\underline{{\text{To Find:}}}}$ The ratio of that TWO numbers ${\underline{{\text{Solution:}}}}$ let, the 1st no. be x and the 2nd no. be y. According to question, $25\% \: \text{of} \: x = 40\%\: \text{of} \: y \\ \\ \implies \frac{25}{100} x = \frac{40}{100} y \\ \\ \implies\frac{x}{y} = \frac{40}{100} \times \frac{100}{25} \\ \\ \implies \frac{x}{y} = \frac{ \cancel{40}}{ \cancel{100}} \times \frac{ \cancel{100}}{ \cancel{25}} \\ \\ \implies \frac{x}{y} = \frac{8}{5} \\ \\ \implies x : y \: = 8: 5$ Hence, the required ratio of 1st no : 2nd no = 8 : 5

50.

25% percent of a number is equal to 40% percent of another number. What is the ratio between the first and the second number respectively?

Answer»

Answer:

8:5

Step-by-step explanation:

${\underline{{\text{Given}}}}$

25% of one no. is EQUAL to 40% 2ND no.

${\underline{{\text{To Find:}}}}$

The ratio of that TWO numbers

${\underline{{\text{Solution:}}}}$

let, the 1st no. be x and the 2nd no. be y.

According to question,

$25\% \: \text{of} \: x = 40\%\: \text{of} \: y \\ \\ \implies \frac{25}{100} x = \frac{40}{100} y \\ \\ \implies\frac{x}{y} = \frac{40}{100} \times \frac{100}{25} \\ \\ \implies \frac{x}{y} = \frac{ \cancel{40}}{ \cancel{100}} \times \frac{ \cancel{100}}{ \cancel{25}} \\ \\ \implies \frac{x}{y} = \frac{8}{5} \\ \\ \implies x : y \: = 8: 5$

Hence, the required ratio of 1st no : 2nd no = 8 : 5

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