332354 + Interview Questions in Secondary School in Math

1.	Find the greatest 3 digit number which is exactly divisible by 9 15 and 18
Answer» 720 is the ANSWER......

Discussion

2.	In triangle ABC , DE is parallel to BC. IF AD=4X-3,DB=3X-1,AE=8X-7 and BC=5X-3, then find the values of x
Answer» SHOW the DIAGRAM PLZ

Discussion

3.	Diameter of a car wheel is 49cm . find how many turns will it take to cover a distance of 3080 cm.
Answer» DIAMETER of wheel = 49 cm Radius = 49 /2 cm Circumference of wheel = 2 PI r = 2 × 22 × 49 / 7 × 2 = 22 × 7 = 154 cm Distance covered = 3080 cm Number of TURNS = Distance travelled / Circumference of wheel = 3080 / 154 = 20

Discussion

4.	If 2 triangles are equiangular prove that the ratio of their corresponding sides is equal to the ratio of their corresponding medians
Answer» It is because if we DIVIDE both of them into to making them RIGHT angle triangles so the median ANG

Discussion

5.	How to find how to find CP and SP in shortcut
Answer» COST price=sp-cp selling price=cp+profit

Discussion

6.	This year mr. Chatwal's apple orchard gave a bumper crop of 25 percent more than last year. If this year's crop is 90000kg what was the amount of apples he had last year
Answer» LET last YEAR crop = x so, This year crop - last year crop = 25% of x 90000 - x = 25x/100 90000 = 25x/100 + x 90000 = 125x/100 x = 9000000/125 x = 72000 So last year YIELD was 72000 kg

6.

This year mr. Chatwal's apple orchard gave a bumper crop of 25 percent more than last year. If this year's crop is 90000kg what was the amount of apples he had last year

Answer»

LET last YEAR crop = x

so, This year crop - last year crop = 25% of x

90000 - x = 25x/100

90000 = 25x/100 + x

90000 = 125x/100

x = 9000000/125

x = 72000

So last year YIELD was 72000 kg

Discussion

7.	If x= 9+4√5 find √x+1/√x??
Answer» $Given : x = 9 + 4\sqrt{5}$ $= > \sqrt{x} = \sqrt{9 + 4\sqrt{5}}$ $= > \sqrt{x} = \sqrt{(\sqrt{5})^2 + 2^2 + 2 * 2 * \sqrt{5}}$ $= > \sqrt{x} = \sqrt{(\sqrt{5} + 2)^2}$ $= > \sqrt{x} = \sqrt{5} + 2$ Now, $= > \frac{1}{\sqrt{5} + 2} * \frac{\sqrt{5} - 2}{\sqrt{5} - 2}$ $= > \frac{\sqrt{5} - 2}{5 - 4}$ $= > \sqrt{5} - 2$ THEREFORE: $= > \sqrt{x} + \frac{1}{\sqrt{x}} = (\sqrt{5} + 2) + (\sqrt{5} - 2)$ $= > 2\sqrt{5}$ HOPE this HELPS!

7.

If x= 9+4√5 find √x+1/√x??

Answer»

$Given : x = 9 + 4\sqrt{5}$

$= > \sqrt{x} = \sqrt{9 + 4\sqrt{5}}$

$= > \sqrt{x} = \sqrt{(\sqrt{5})^2 + 2^2 + 2 * 2 * \sqrt{5}}$

$= > \sqrt{x} = \sqrt{(\sqrt{5} + 2)^2}$

$= > \sqrt{x} = \sqrt{5} + 2$

Now,

$= > \frac{1}{\sqrt{5} + 2} * \frac{\sqrt{5} - 2}{\sqrt{5} - 2}$

$= > \frac{\sqrt{5} - 2}{5 - 4}$

$= > \sqrt{5} - 2$

THEREFORE:

$= > \sqrt{x} + \frac{1}{\sqrt{x}} = (\sqrt{5} + 2) + (\sqrt{5} - 2)$

$= > 2\sqrt{5}$

HOPE this HELPS!

Discussion

8.	Please give me all answers fast and get 50 points
Answer» I didn't GET 3 and 2

Discussion

9.	The value of sin36∘sin72∘sin108∘sin144∘ is equal to
Answer» => sin 36 * sin 72 * sin 108 * sin 144 => sin 36 * sin 72 * sin (180 - 72) * sin (180 - 36) => sin 36 * sin 72 * sin 72 * sin 36 => [sin 36 * sin 72]² =>¼ [ 2sin 36 * sin 72]² =>¼ [ COS 36 - cos 108]² 2sin(A)*sin(B) = [cos(A-B) - cos(A+B)] =>¼ [ cos 36 + sin 18]² ; cos(108) = cos(90+18) = -sin(18)] =>¼ [ (√5 + 1)/4 + (√5 - 1)/4]² ; PUT cos 36 = (√5 + 1)/4 and sin 18 = (√5 - 1)/4 =>¼ [ √5/2 ]² => 5/16

9.

The value of sin36∘sin72∘sin108∘sin144∘ is equal to

Answer»

=> sin 36 * sin 72 * sin 108 * sin 144

=> sin 36 * sin 72 * sin (180 - 72) * sin (180 - 36)

=> sin 36 * sin 72 * sin 72 * sin 36

=> [sin 36 * sin 72]²

=>¼ [ 2sin 36 * sin 72]²

=>¼ [ COS 36 - cos 108]²

2sin(A)*sin(B) = [cos(A-B) - cos(A+B)]

=>¼ [ cos 36 + sin 18]² ; cos(108) = cos(90+18) = -sin(18)]

=>¼ [ (√5 + 1)/4 + (√5 - 1)/4]²

; PUT

cos 36 = (√5 + 1)/4 and sin 18 = (√5 - 1)/4

=>¼ [ √5/2 ]²

=> 5/16

Discussion

10.	Do the points lie in the same quadrant (6,-6)and (-6,6)
Answer» No... (6,-6) will LIE in 4 th QUAD.. ND (-6,6) will lie in 2ND quad..

Discussion

11.	Find the cube root of 4096 and method
Answer» 2 4096 2 2048 2 1024 2 512 2 256 2 128 2 64 2 32 2 16 2 8 2 4 2 2 1 4096= 16

Discussion

12.	Using diviion method find the H C F of 144 and 292 ._________
Answer» Firstly find factors of these TWO numbers then SELECT the highest number which COMES in both the numbers pls #FOLLOW me#

Discussion

13.	In a school there are 135 students in class 5 and 165 students in class 6. A teacher wants to form groups consisting of equal number of students of the same class. Find the least number of groups that can be formed by the students of the two classes and the number of students in each group.
Answer» 135+165÷2 300÷2 150 is the ANSWER

Discussion

14.	(√11−√7)(√11+√7) Simplify the given expressions.
Answer» HEY ✋ there your ANSWER is________ = $(\sqrt{11} - \sqrt{7} )( \sqrt{11} + \sqrt{7})$ = $(\sqrt{11 {}^{2} } - \sqrt{7 {}^{2} } )$ = $(11 - 7)$ = $4$ Hope it is CORRECT and HELPS U.....!!!

Discussion

15.	Rs 156250 for 3/2 years at 8% p.a. compounded half yearly
Answer» The SOLUTION is in the PICTURE ATTACHED ANSWER is 19510

15.

Rs 156250 for 3/2 years at 8% p.a. compounded half yearly

Answer»

The SOLUTION is in the PICTURE ATTACHED

ANSWER is 19510

Discussion

16.	in measuring the height of Somnath the error percent is 20% if somnaths original height is 152cm what was d height of Somnath on d formation of error
Answer» 182.4 will be the ANSWER

Discussion

17.	What is the mirror image of a point (3,7) with respect to x axis
Answer» ANS. (3,-7) Am I RIGHT?

Discussion

18.	Draw the graph of each of the following: (i) X = −2 ; (ii) 2y + 5 = 0
Answer» Ans of ii ....hope it is help full..USE X and y AXES of RED pen ..not of PENCIL..

Discussion

19.	Solve it please .......
Answer» ANSWER to your QUESTION

Discussion

20.	ABCD is a trapezium in which AB parallel DC DC=30cm and AB=50cm. If X and Y are respectively the mid point of AD and BC then prove that area(DCYX)=7/9area(XYBA).
Answer» Can you SEND a PIC of it I'll SURELY SOLVE it

Discussion

21.	Please answer 6,7,8 questions
Answer» ANSWER to your question 8) 2) (1,4)

Discussion

22.	Prove that sinA/1+cosA +1+cosA/sinA = 2 cosec A
Answer» HOPE this will HELP....

Discussion

23.	Find the square root of 410 by estimation
Answer» √410=√2×205 =√2×5×41 =20.24845673132 =20.248

Discussion

24.	Plz guys tell me this question with full mehod
Answer» The LEAST VALUE of K is 6

Discussion

25.	Substitution 3x-4y=15 2x+7y=9
Answer» VALUE of, y= -3/29 x= 141/841

Discussion

26.	A garrison of 500 men had provision for 24 day however reinforcement of 300 men arrived for how many day will the food last now
Answer» I HOPE it will HELP you

Discussion

27.	What is 532nd part of 1004416
Answer» The 532ND PART of 1004416 is 1888

Discussion

28.	Cos theta equal to 3 by 2
Answer» COS THETA = b/h ,THEREFORE b=3 and h=2 then FIND p therefore, 2^2=p^2+3^2 4=p^2+6 p^2=6-4 p=2 h=2 b=3

Discussion

29.	TanA/1-cotA + cotA/1-tanA = 1 + secA cosecA
Answer» $\huge \bf{HEY \: FRIENDS!!}$ -------------------------------------------------- $\huge \bf \underline{Here \: is \: your \: answer↑}$ ⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆ $\boxed{See \: the \: attachment \: for \: your \: answer↑}$ ⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆⬆ ✅✅ HENCE, it is proved✔✔. $\huge \boxed{THANKS}$ $\huge \bf \underline{Hope \: it \: is \: helpful \: for \: you}$

Discussion

30.	9th gseb maths navneet digest
Answer» SAY the QUESTION CLEARLY

Discussion

31.	The hcf and lcm of two numbers are 37 and 2664 respectively.if one no. is 333,find the other number
Answer» Other number=37×2664/333 =37×8 = 296

Discussion

32.	Define an invertible mapping. prove that the inverse of an invertible mapping is invertible
Answer» Let f:S→T be a MAPPING. Let f−1⊆T×S be the inverse of f: f−1:={(t,s):f(s)=t} Let f−1 itself be a mapping: ∀y∈T:(y,x1)∈f−1∧(y,X2)∈f−1⟹x1=x2 and ∀y∈T:∃x∈S:(y,x)∈f Then f−1 is CALLED the inverse mapping of f. Definition 2 Let f:S→T and g:T→S be mappings. Let: g∘f=IS f∘g=IT where: g∘f and f∘g denotes the composition of f with g in either order IS and IT denote the identity mappings on S and T respectively. That is, f and g are both left inverse mappings and RIGHT inverse mappings of each other. Then: g is the inverse (mapping) of f f is the inverse (mapping) of g. hope this helps you..

32.

Define an invertible mapping. prove that the inverse of an invertible mapping is invertible

Answer»

Let f:S→T be a MAPPING.

Let f−1⊆T×S be the inverse of f:

f−1:={(t,s):f(s)=t}

Let f−1 itself be a mapping:

∀y∈T:(y,x1)∈f−1∧(y,X2)∈f−1⟹x1=x2

and

∀y∈T:∃x∈S:(y,x)∈f

Then f−1 is CALLED the inverse mapping of f.

Definition 2

Let f:S→T and g:T→S be mappings.

Let:

g∘f=IS

f∘g=IT

where:

g∘f and f∘g denotes the composition of f with g in either order

IS and IT denote the identity mappings on S and T respectively.

That is, f and g are both left inverse mappings and RIGHT inverse mappings of each other.

Then:

g is the inverse (mapping) of f

f is the inverse (mapping) of g.

hope this helps you..

Discussion

33.	Pushpa is twice as old as rita was 2 years ago. if difference between their ages is 2 years, how old is pushpa today
Answer» LET, Pushpa's age= x RITA's age= y Then, 2 years ago, Rita's age= y-2 At present, Pushpa's age= 2(y-2) THUS, x=2(y-2) ....(i) Also, x-y=2 =>x=y+2 ....(II) COMPARING (i) & (ii), 2(y-2)=y+2 =>2y-4=y+2 =>2y-y=4+2 =>y=6 Thus, x=y+2=6+2=8 => x=8 Pushpa is 8 years old.

33.

Pushpa is twice as old as rita was 2 years ago. if difference between their ages is 2 years, how old is pushpa today

Answer»

LET,

Pushpa's age= x

RITA's age= y

Then, 2 years ago,

Rita's age= y-2

At present,

Pushpa's age= 2(y-2)

THUS, x=2(y-2) ....(i)

Also, x-y=2

=>x=y+2 ....(II)

COMPARING (i) & (ii),

2(y-2)=y+2

=>2y-4=y+2

=>2y-y=4+2

=>y=6

Thus, x=y+2=6+2=8 => x=8

Pushpa is 8 years old.

Discussion

34.	find the point of intersection of y axis and perpendicular bisector of line segment joining (3,6) and (-3,4).
Answer» (3,6)-is on 1ST QUADRANT (-3,4)LIES in 2ND qudrant

Discussion

35.	a fan is marked at rs 15600 rupees and it is available for rs 12480 find the discount given and discount%
Answer» HEYA MATE, HERE IS UR ANSWER. Thanks for ASKING this question. Given that Marked Price = ₹15,600 Discount = ₹12,480 We have to find discount %. Discount % = Discount/Marked Price × 100 = 12,480/15,600×100 = 80 %. I HOPE IT HELPS U.

Discussion

36.	What it means how many three digit number are the squares of positive integers
Answer» This question is asking you that tell the NUMBER of numbers whose square is between 100 and 999. For example 25 , it's square is 625.

Discussion

37.	the number of boys and girls in class are 9:5.the number of girls is 12less then The number of boys.what is the total strength of the class.
Answer» LET no. Of boys be X ,So no. of GIRLS is(x-12) According to question x/x-12=9/5 On SOLVING, we get x=27 No. of boys=x=27 No. of girls=(x-12)=15

Discussion

38.	Definition of acute angle triangle
Answer» An ACUTE TRIANGLE is a triangle with all THREE ANGLES acute (LESS than 90°)......●●●●●

Discussion

39.	There are 15525 saplings in the field. If 25 saplings are planted in a row how many rows of saplings
Answer» Solution: given TOTAL no. of saplings =15525 and no. of saplings in 1 ROW =25 so therefore, required ROWS = 15525/25 =621 is your ANSWER

39.

There are 15525 saplings in the field. If 25 saplings are planted in a row how many rows of saplings

Answer»

Solution:

given TOTAL no. of saplings =15525

and no. of saplings in 1 ROW =25

so therefore, required ROWS = 15525/25

=621 is your ANSWER

Discussion

40.	Some one please help me....find y(y =926/21)please help!
Answer» On SOLVING we will GET the EQUATION= 18y+19/24=6y+44/9 On solving the equation, the VALUE of Y=-25/6

Discussion

41.	The H C F of 135 and 5 is.
Answer» HCF of 135 and 5 is 5 I HOPE this helps and mate Mark me as brainliest I am only 1 point AWAY

Discussion

42.	The angle in a suplementry angle is 3a ,3a+20,2a find a
Answer» 3a+3a+20+2a=180 8a+20=180 8a=180-20=160 a=160/8 :.a=20

Discussion

43.	X^2 - 17x-84 factorise urgent
Answer» X² - 17x - 84 => x² - ( 21 - 4 ) X - 84 => x² - 21X + 4x - 84 => x( x - 21 ) + 4( x - 21 ) => ( x - 21 ) ( x + 4 ) $.$

Discussion

44.	2^a=3^b=6^c prove that c=ab/a+b
Answer» LET 2^a=3^b=6^c=K (K≠0) 2^a = K ⇒2 = K^1/a 3^b = K ⇒3 = K^1/b 6^c = K ⇒6 = K^1/c We know that: 6 = 2 * 3 ⇒ K^1/c = K^1/a * K^1/b ⇒ K^1/c = K^1/a+1/b ⇒ K^1/c = K^a+b/ab ⇒ 1/c = a+b/ab [∵ the BASES are EQUAL, equating them:] ⇒ c = ab/a+b

44.

2^a=3^b=6^c prove that c=ab/a+b

Answer»

LET 2^a=3^b=6^c=K (K≠0)

2^a = K ⇒2 = K^1/a

3^b = K ⇒3 = K^1/b

6^c = K ⇒6 = K^1/c

We know that:

6 = 2 * 3

⇒ K^1/c = K^1/a * K^1/b

⇒ K^1/c = K^1/a+1/b

⇒ K^1/c = K^a+b/ab

⇒ 1/c = a+b/ab [∵ the BASES are EQUAL, equating them:]

⇒ c = ab/a+b

Discussion

45.	How To Remember Math Identies
Answer» Hey FRIEND..... To REMEMBER identities you MUST practice the sums related to identities.Then only you can remember all the identities. Or ONE more thing.... Understand all the identities derivation.This would help .... Hope it helps.....

Discussion

46.	Sita bought 2kg 299g apples and 3kg 250g magoes .gita bought 3kg 800g oranges and 4kg 150g bananas who bought more fruits?(pls get me full answer)
Answer» Sita bought, APPLES = 2.299 KG, MANGOES = 3.250 kg TOTAL = 2.299 + 3.250 kg = 5.549 kg Gita bought, Oranges = 3.800 kg, Bananas = 4.150 kg, Total = 3.800 + 4.150 kg = 7.95 kg Gita bought more fruit

46.

Sita bought 2kg 299g apples and 3kg 250g magoes .gita bought 3kg 800g oranges and 4kg 150g bananas who bought more fruits?(pls get me full answer)

Answer»

Sita bought, APPLES = 2.299 KG, MANGOES = 3.250 kg

TOTAL = 2.299 + 3.250 kg = 5.549 kg

Gita bought, Oranges = 3.800 kg, Bananas = 4.150 kg,

Total = 3.800 + 4.150 kg = 7.95 kg

Gita bought more fruit

Discussion

47.	Rs.2.50 =_____ pplease answer fast.....
Answer» RS. 2.50= 250 PAISE..............

Discussion

48.	By how much should 100 be decreased to get 18. 8
Answer» Here is your ANSWER.... the NUMBER is 81.2 hope this HELPS you...

Discussion

49.	1 is .........prime.........composite.
Answer» HEY MATE here is your answer. it should be NEITHER PRIME nor composite. hope it HELPS you. ^_^

Discussion

50.	If the coefficient of x is zero in a quadratic polynomial then prove that the zeroes will be the equal in magnitude and opposite in sign
Answer» Let the quadratic POLYNOMIAL be a x^2 + bx + c. Let the zeros be m and n Given: b=0 Now, Sum of the zeros = (-b/a) i.e m+n = 0 ( since b= 0) ===> either m = -n or n = -m THEREFORE the zeros are opposite in sign. I hope this answer helps you

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Find the greatest 3 digit number which is exactly divisible by 9 15 and 18

In triangle ABC , DE is parallel to BC. IF AD=4X-3,DB=3X-1,AE=8X-7 and BC=5X-3, then find the values of x

Diameter of a car wheel is 49cm . find how many turns will it take to cover a distance of 3080 cm.

If 2 triangles are equiangular prove that the ratio of their corresponding sides is equal to the ratio of their corresponding medians

How to find how to find CP and SP in shortcut

This year mr. Chatwal's apple orchard gave a bumper crop of 25 percent more than last year. If this year's crop is 90000kg what was the amount of apples he had last year

If x= 9+4√5 find √x+1/√x??

Please give me all answers fast and get 50 points

The value of sin36∘sin72∘sin108∘sin144∘ is equal to

Do the points lie in the same quadrant (6,-6)and (-6,6)

Find the cube root of 4096 and method

Using diviion method find the H C F of 144 and 292 ._________

In a school there are 135 students in class 5 and 165 students in class 6. A teacher wants to form groups consisting of equal number of students of the same class. Find the least number of groups that can be formed by the students of the two classes and the number of students in each group.

(√11−√7)(√11+√7) Simplify the given expressions.

Rs 156250 for 3/2 years at 8% p.a. compounded half yearly

in measuring the height of Somnath the error percent is 20% if somnaths original height is 152cm what was d height of Somnath on d formation of error

What is the mirror image of a point (3,7) with respect to x axis

Draw the graph of each of the following: (i) X = −2 ; (ii) 2y + 5 = 0

Solve it please .......

ABCD is a trapezium in which AB parallel DC DC=30cm and AB=50cm. If X and Y are respectively the mid point of AD and BC then prove that area(DCYX)=7/9area(XYBA).

Please answer 6,7,8 questions

Prove that sinA/1+cosA +1+cosA/sinA = 2 cosec A

Find the square root of 410 by estimation

Plz guys tell me this question with full mehod

Substitution 3x-4y=15 2x+7y=9

A garrison of 500 men had provision for 24 day however reinforcement of 300 men arrived for how many day will the food last now

What is 532nd part of 1004416

Cos theta equal to 3 by 2

TanA/1-cotA + cotA/1-tanA = 1 + secA cosecA

9th gseb maths navneet digest

The hcf and lcm of two numbers are 37 and 2664 respectively.if one no. is 333,find the other number

Define an invertible mapping. prove that the inverse of an invertible mapping is invertible

Pushpa is twice as old as rita was 2 years ago. if difference between their ages is 2 years, how old is pushpa today

find the point of intersection of y axis and perpendicular bisector of line segment joining (3,6) and (-3,4).

a fan is marked at rs 15600 rupees and it is available for rs 12480 find the discount given and discount%

What it means how many three digit number are the squares of positive integers

the number of boys and girls in class are 9:5.the number of girls is 12less then The number of boys.what is the total strength of the class.

Definition of acute angle triangle

There are 15525 saplings in the field. If 25 saplings are planted in a row how many rows of saplings

Some one please help me....find y(y =926/21)please help!

The H C F of 135 and 5 is.

The angle in a suplementry angle is 3a ,3a+20,2a find a

X^2 - 17x-84 factorise urgent

2^a=3^b=6^c prove that c=ab/a+b

How To Remember Math Identies

Sita bought 2kg 299g apples and 3kg 250g magoes .gita bought 3kg 800g oranges and 4kg 150g bananas who bought more fruits?(pls get me full answer)

Rs.2.50 =_____ pplease answer fast.....

By how much should 100 be decreased to get 18. 8

1 is .........prime.........composite.

If the coefficient of x is zero in a quadratic polynomial then prove that the zeroes will be the equal in magnitude and opposite in sign