332354 + Interview Questions in Secondary School in Math

1.	Plz solve it write steps
Answer» ${x}^{3} - {y}^{3} = (x - y)( {x}^{2} + {y}^{2} + xy)$ We have to USE this formula. ${a}^{3} - {a}^{ - 3} = (a - {a}^{ - 1})( {a}^{2} + 1 + {a}^{ - 2} )$ => $a - {a}^{ - 1} \: is \: given \: a s \: 7.$ => ${a}^{3} - {a}^{ - 3} = 7( {a}^{2} + {a}^{ - 2} + 1)$ since ${(a - {a}^{ - 1})}^{2} = {a}^{2} + {a}^{ - 2} - 1$ $50 = {a}^{2 } + {a}^{ - 2}$ So a3-1/a3=7(50+1)=7(51)=357. Thus 357 is the Answer. Hope it HELPS you...

Discussion

2.	19625 plants have been equally planted in 157 rows. Find the number of plants in each rows
Answer» 125 in each row. pls MARK BRAINLIEST

Discussion

3.	22 grams convert into kgs
Answer» 1000gram=1kg therefore, 22gram=0.022kg

Discussion

4.	4 x + 4 / 3 X + 6 is equal to 16 by 15 cross multiplication method
Answer» ( 4x + 4 ) / ( 3x + 6 ) = 16 / 15 By Cross - Multiplication 15( 4x + 4 ) = 16( 3x + 6 ) 60X + 60 = 48x + 96 60x - 48x = 96 - 60 12x = 36 x = 3

4.

4 x + 4 / 3 X + 6 is equal to 16 by 15 cross multiplication method

Answer»

( 4x + 4 ) / ( 3x + 6 ) = 16 / 15

By Cross - Multiplication

15( 4x + 4 ) = 16( 3x + 6 )

60X + 60 = 48x + 96

60x - 48x = 96 - 60

12x = 36

x = 3

Discussion

5.	Find the value of 4xsquare -5x+3, when x =2
Answer» The ANSWER is. 10 I don't EXPLAINED it

Discussion

6.	at the end of each year the value of machine is depriciated by 20% of its value at the begining of the year .if its initial value is 1250 find the value at the end of 5 years
Answer» 1250 80/10080/10080/10080/10080/100 =12504/54/54/54/54/5 =125064/12516/25 =106416/25 =409.6

Discussion

7.	Find x if log4(x-5)=0
Answer» 4(x-5)=0 4x-20=0 4x=20+0 x=20/4 x=5

Discussion

8.	The sum of three consecutive even numbers is 138
Answer» Let NUMBERS are ( 2X ) , 2( x + 1 ) , 2( x + 2 ) Their sum = 138 => 2x + 2( x + 1 ) + 2( x + 2 )= 138 => x + x + 1 + x + 2 = 69 => 3( x + 1 ) = 69 => x + 1 = 23 => x = 22 Required numbers are 2x = 2(22) = 44 2( x + 1 ) = 2( 23 ) = 46 2( x + 2 ) = 2(24) = 48

8.

The sum of three consecutive even numbers is 138

Answer»

Let NUMBERS are ( 2X ) , 2( x + 1 ) , 2( x + 2 )

Their sum = 138

=> 2x + 2( x + 1 ) + 2( x + 2 )= 138

=> x + x + 1 + x + 2 = 69

=> 3( x + 1 ) = 69

=> x + 1 = 23

=> x = 22

Required numbers are

2x = 2(22) = 44

2( x + 1 ) = 2( 23 ) = 46

2( x + 2 ) = 2(24) = 48

Discussion

9.	Equivalent to 100×3+10×0+1×2
Answer» 300 + 0 + 2 = 302 Hope my answer HELPED you....no need to MARK my answer as brainliest.

Discussion

10.	If SinA+SinB=2;then the value of CosA+CosB.
Answer» SinA + SinB = 2 It means A and B are 90 because sin90 = 1 SIN A = 1/Cos A and Sin b = 1/cos B according to trignomatry 1/Cos A + 1/ Cos B = 2 Cos A + Cos B = 2 X Cos A Cos B Cos A + Cos B = 2 x Cos 90 x Cos 90 = 0 Answer @skb

Discussion

11.	What is the degree of ax + by +c
Answer» The DEGREE is 2.......

Discussion

12.	a trader sold 40 eraser and earned a profit equal to the selling price of 12 eraser find his profit percentage
Answer» 36 is the PROFIT PERCENTAGE

Discussion

13.	2 more than 5 millions
Answer» FIVE MILLION TWO I THINK it is only

Discussion

14.	2x + 3y = 03x + 4y = 5Solve for x and y by substitution method
Answer» Just FIND X and PUT in other EQUATION

Discussion

15.	Equivalent to 100 ×3 +10× 0+ 10 1×2
Answer» 320 will be its ANSWER

Discussion

16.	Find the value of the polynomial 4xsquare-5x+3 when x=-1
Answer» ANS of this QUESTION is 12

Discussion

17.	Hlo freinds...^_^pls solve it ...
Answer» (x/y)+( y/x)= -1 (x^2+ y^2)/XY= -1 x^2+y^2= -xy x^2+ y^2+xy = 0 so, x^3-y^3= (x-y)(x^2+y^2+xy) = (x-y)× 0 =0 is ANSWER

Discussion

18.	Mh08ax3121 whats the girl name
Answer» PLEASE ASK a STUDY RELATED QUESTION.

Discussion

19.	How many triangles can be constructed with sides measuring 7 cm, 6 cm, and 9 cm?
Answer» The TRIANGLES can be CONSTRUCTED with sides MEASURING 7 cm, 6 cm, 9 cm is 1

Discussion

20.	If 0.35 part of a book read in 2 days then how many days to complete a book
Answer» the DAY needed to complete 1.0 of book will TAKE 5.70 days means 6TH day ONE fourth is needed

Discussion

21.	If one-third of one-fourth of a number is 15 wa wa what is three tenth
Answer» 54 is the ANSWER . .

Discussion

22.	If numiretor is increased 4 and denominator also increased 3/4
Answer» PLEASE ASK COMPLETE QUESTION DEAR

Discussion

23.	If my birthdayis on saturday then how many days to go
Answer» First of all HAPPY birthday in advance If UR birthday is on Saturday then it's tomorrow...or it can be on ANOTHER Saturday.... as U have not mentioned the DATE.

Discussion

24.	Solve {3^7÷3^11}^3×3^-8
Answer» (3^-4)^3 3^-8 3^-123^-8 3^-20

Discussion

25.	Divide to this questions plz ,give me answer fast and plz solve kiya hua photos bhejna plz..... ....
Answer» I) 6x^2 + x - 12 _________________ x-1 \|6x^3 + 5x^2 - 13x + 12 6x^3 - 6x^2 (-) (+) ---------------------------------- x^2 - 13x +12 x^2 - x (-) (+) ---------------------------------- -12x + 12 -12x + 12 (+) (-) ----------------------------- 0 (ii) 3a^2 - 19A + 30 _________________ 3.a+1 \|9a^3 - 27a^2 - 100a + 300 9a^3 + 30a^2 (-) (-) ---------------------------------- -57a^2 - 100a +300 -57a^2 - 190a (+) (+) ---------------------------------- 90a + 300 90 + 300 (-) (-) ----------------------------- 0 (iii) x^2 - x + 2 _________________ x-2 \|x^3 - 3x^2 + 4x - 5 x^3 - 2X^2 (-) (+) ---------------------------------- - x^2 + 4x - 5 - x^2 + 2x (+) (-) ---------------------------------- 2x - 5 2x - 4 (-) (+) ----------------------------- -1

Discussion

26.	the average age of an adult is 40 years 12 new students with an average age of 32 years join the class thereby decreasing the average of the class by 4 years the original strength of the class was
Answer» The average age of an adult=40 years. let number of ADULTS be x. So SUM of all ages of adults =40(x)= 40x . Sum of all 12 students of average age of 32 years=32(12)=384 . Sum of ages of adults and students =40x+384 .As average drops by years , new average of this group=36 years . Number of members in this group=x+12 => 36= 40x+384/x+12 => 36(x+12) =40x+384 => 40x-36x=432-384=48 =>x=48/4= 12 . So the original strength of the CLASS is 12 .Hope it HELPS you...

Discussion

27.	[2^7x2^8]÷2^15 solve this
Answer» When bases are same power are ADDED so 2^15 ÷ 2^15 === 1 hope HELPS

Discussion

28.	X + Y equal to 12 and xy equal to 32 find the value of x cube + Y cube
Answer» $x + y = 12 \: \: \: \: \: \: - - - (1)\\ xy = 32 \: \: - - - - - (2) \\ \\ from \: eq \: (1) \\ x = 12 - y \: \: \: \: \: - - - - (3) \\ putting \: eq \: (3) \: in \: \: (2)\\ (12 - y)(y) = 32 \\ {y}^{2} + 12y - 32 = 0 \\ {y}^{2} + 8y + 4y - 32 \\ y(y + 8) - 4(y + 8) = 0 \\ (y - 4) = 0 \: \:( y + 8) = 0 \\ y = 4 \: \: y = - 8 \\ \\ x + 4 = 12 \\ x = 8 \\ {x}^{3} + {y}^{3} \\ = {8 }^{3} + {4}^{3} \\ = 512 + 64 \\ = 576$

Discussion

29.	Heya mates!! are you a maths mastermind solve this question number 57 please with solution
Answer» ANSWER is (d)19 plz MARK it BRAINLIEST

Discussion

30.	Find the number which is 14375 less than 16038
Answer» 1163 hope this will HELP you........

Discussion

31.	If third term is ap is 7 and 7 term is 15 find the 30th term
Answer» hope it help u plz mark as a BRAINLIEST & FOLLOW me

31.

If third term is ap is 7 and 7 term is 15 find the 30th term

Answer»

hope it help u

plz mark as a BRAINLIEST & FOLLOW me

Discussion

32.	Help me to do this sums
Answer» The PICTURE is not CLEAR....... TYPE ONE one QUESTION

Discussion

33.	A number is such that it as a much greater than 65 as. It is less than 91. Find the number?
Answer» the number is 78 because it is MUCH greater than 65 as it is much LESS than 91 means it is the number between that is equal to the HALF of 65 and 91

Discussion

34.	Find the compound interest on Rs 5000at 12% p.a. for 1.5 years , if the interest is compounded annually .
Answer» 900 is the ANSWER 50001215\100*10=900

Discussion

35.	With process plz plz plz
Answer» total kg of SWEET = 48kg each person gets 1/6 kg no of people = total kg / kg given per person = 48 / 1/6 = 48 * 6 = 288 therefore 288 people were there in the group pls MARK as BRAINLIEST

35.

With process plz plz plz

Answer»

total kg of SWEET = 48kg

each person gets 1/6 kg

no of people = total kg / kg given per person

= 48 / 1/6 = 48 * 6 = 288

therefore 288 people were there in the group

pls MARK as BRAINLIEST

Discussion

36.	Write 0,7,10,-4 in p/q form?
Answer» 0/1 7/1 10/1 -4/1 all INTEGER no. are RATIONAL no.

Discussion

37.	Solve this question 3^7x3^6x3^-2x3
Answer» HI! ANSWER is 3¹². Hope you FOUND my answer USEFUL .

Discussion

38.	200 student took part in a sport competition there were four times many girls as boys
Answer» G be girls b be boys g=4b g+b=200 4b+b=200 5b=200 b=40 g =4×40=160

Discussion

39.	Plz solve this question in this picture.
Answer» c = 180 - 35 = 145 d = 180 - 110 = 70 g = 180 - 125 = 55 F = 110 e = 180 - 110 = 70 B = 360 - (110 + c + e) = 360 - (110 + 145 + 70) = 35 a = 180 - b = 180 - 35 = 145 h = 360 - ( d + g + f) = 360 - (70 + 55 + 110) = 125 i = 180 - 125 = 55 l = 110 coz of vertically opposite property k = d = 70 j = 180 - 130 = 50 n = 180 - (70 + 50) = 180 - 120 = 60 (k + j + n = 180) because angles of a triangle sum is 180 o = k = 70 m = 180 - (n+o) = 180 - (60 + 70) = 180 - 130 = 50

39.

Plz solve this question in this picture.

Answer»

c = 180 - 35 = 145

d = 180 - 110 = 70

g = 180 - 125 = 55

F = 110

e = 180 - 110 = 70

B = 360 - (110 + c + e) = 360 - (110 + 145 + 70) = 35

a = 180 - b = 180 - 35 = 145

h = 360 - ( d + g + f) = 360 - (70 + 55 + 110) = 125

i = 180 - 125 = 55

l = 110 coz of vertically opposite property

k = d = 70

j = 180 - 130 = 50

n = 180 - (70 + 50) = 180 - 120 = 60 (k + j + n = 180) because angles of a triangle sum is 180

o = k = 70

m = 180 - (n+o) = 180 - (60 + 70) = 180 - 130 = 50

Discussion

40.	average of 50 numbers is 38. if two numbers namely 45 and 55 or discarded the average of remaining number is
Answer» SUM of 50 = 50×38=1900 now AVERAGE= sum/total terms =1900-45-55/48 =37.5 NEW average

Discussion

41.	Compound interest on 65000 for 3 years at the rate of 10 p.a. what is the amount
Answer» A = p×((100+10)/100)³ = 65000 × 11 ×11 ×11 /1000 = 65×1331 = 86515

Discussion

42.	DO ANY 2 QUESTIONS......
Answer» Here are the ANSWERS. I didn't ADD the STEPS. 4) 33957 5) 98450

42.

DO ANY 2 QUESTIONS......

Answer»

Here are the ANSWERS. I didn't ADD the STEPS.

4) 33957

5) 98450

Discussion

43.	Which is the greatest rational number between 3 by 7 and 9 by 13
Answer» Hi! It is 9/13. To check, you can check yourself, take LCM of DENOMINATORS and name them like FRACTIONS and compare. Hope you FOUND my answer useful .

Discussion

44.	How many digits occur 20 times while writing numbers upto 99?
Answer» 9 is the NUMBER which OCCURS 20 times while writing NUMBERS upto 99

Discussion

45.	How many divisors (including 1, but excluding 1000) are there for the number 1000?
Answer» 2 \| 1000 2 \| 500 2 \| 250 5 \| 125 5 \| 5 \| 1 1000= 22255 follow above procedure to find number of divisors for any number including one and itself in this PROCESS we use only prime NUMBERS to divide a specific number until we get one as shown in picture we can write 1000 as (2^3)×(5^3) = 1000 for any number 'n' after primefactorization we get n = (2^a)×(3^b)×(5^c)×(7^d)...... number of divisors for n = (a+1)×(b+1) ×(c+1)........ similarly for 1000 = (3+1)×(3+1) = 16(including 1 and itself(1000)) excluding 1000 we get only 15

45.

How many divisors (including 1, but excluding 1000) are there for the number 1000?

Answer»

2 | 1000

2 | 500

2 | 250

5 | 125

5 | 5

| 1

1000= 2*2*2*5*5

follow above procedure to find number of divisors for any number including one and itself

in this PROCESS we use only prime NUMBERS to divide a specific number until we get one as shown in picture

we can write 1000 as

(2^3)×(5^3) = 1000

for any number

'n' after primefactorization we get

n = (2^a)×(3^b)×(5^c)×(7^d)......

number of divisors for

n = (a+1)×(b+1) ×(c+1)........

similarly for

1000 = (3+1)×(3+1) = 16(including 1 and itself(1000))

excluding 1000 we get only 15

Discussion

46.	How many composite numbers are in first ten natural numbers.what is the probability?
Answer» There are 5 NATURAL NUMBERS . the PROBABILITY is1/2

Discussion

47.	If 2 men and 3 boy can do a piece of work in 10 days while 3 men and 2 boy can do the same work in 8 day .in how many days can 2 men and 1 boy do the work ?
Answer» TOTAL work=lcm of 10 & 8 days =40 2 m+3 b=40/10=4 3 m+2b=40/8=5 6m+9b=12 6m+4b=10 5b=2 1 boy ka 1 day work=2/5 units 2 m+3 ×2/5=4 2 m ka 1 day work =4-6/5=14/5 2 m +1 boy ka 1 day work=14/5+2/5=16/5 units total work =40 units no. of days=40/(16/5)=200/16=50/4=12½ days

Discussion

48.	If 1 degree equal to 60 minutes then find the value of 1minute
Answer» VALUE of 1 MINUTE = 0.0167 DEGREE

Discussion

49.	Verify the property a×(b+c)=a×b+a×c by taking a=4/11 b=-33/8,c=7/4 solve
Answer» HOPE the PICTURE is CLEAR ENOUGH:)

Discussion

50.	Solve the following [[125-1/3]]5]0
Answer» As if in between BRACKETS there is no SIGN then it is MULTIPLICATION sign ANS is 0

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Plz solve it write steps

19625 plants have been equally planted in 157 rows. Find the number of plants in each rows

22 grams convert into kgs

4 x + 4 / 3 X + 6 is equal to 16 by 15 cross multiplication method

Find the value of 4xsquare -5x+3, when x =2

at the end of each year the value of machine is depriciated by 20% of its value at the begining of the year .if its initial value is 1250 find the value at the end of 5 years

Find x if log4(x-5)=0

The sum of three consecutive even numbers is 138

Equivalent to 100×3+10×0+1×2

If SinA+SinB=2;then the value of CosA+CosB.

What is the degree of ax + by +c

a trader sold 40 eraser and earned a profit equal to the selling price of 12 eraser find his profit percentage

2 more than 5 millions

2x + 3y = 03x + 4y = 5Solve for x and y by substitution method

Equivalent to 100 ×3 +10× 0+ 10 1×2

Find the value of the polynomial 4xsquare-5x+3 when x=-1

Hlo freinds...^_^pls solve it ...

Mh08ax3121 whats the girl name

How many triangles can be constructed with sides measuring 7 cm, 6 cm, and 9 cm?

If 0.35 part of a book read in 2 days then how many days to complete a book

If one-third of one-fourth of a number is 15 wa wa what is three tenth

If numiretor is increased 4 and denominator also increased 3/4

If my birthdayis on saturday then how many days to go

Solve {3^7÷3^11}^3×3^-8

Divide to this questions plz ,give me answer fast and plz solve kiya hua photos bhejna plz..... ....

the average age of an adult is 40 years 12 new students with an average age of 32 years join the class thereby decreasing the average of the class by 4 years the original strength of the class was

[2^7x2^8]÷2^15 solve this

X + Y equal to 12 and xy equal to 32 find the value of x cube + Y cube

Heya mates!! are you a maths mastermind solve this question number 57 please with solution

Find the number which is 14375 less than 16038

If third term is ap is 7 and 7 term is 15 find the 30th term

Help me to do this sums

A number is such that it as a much greater than 65 as. It is less than 91. Find the number?

Find the compound interest on Rs 5000at 12% p.a. for 1﻿﻿.5 years , if the interest is compounded annually .

With process plz plz plz

Write 0,7,10,-4 in p/q form?

Solve this question 3^7x3^6x3^-2x3

200 student took part in a sport competition there were four times many girls as boys

Plz solve this question in this picture.

average of 50 numbers is 38. if two numbers namely 45 and 55 or discarded the average of remaining number is

Compound interest on 65000 for 3 years at the rate of 10 p.a. what is the amount

DO ANY 2 QUESTIONS......

Which is the greatest rational number between 3 by 7 and 9 by 13

How many digits occur 20 times while writing numbers upto 99?

How many divisors (including 1, but excluding 1000) are there for the number 1000?

How many composite numbers are in first ten natural numbers.what is the probability?

If 2 men and 3 boy can do a piece of work in 10 days while 3 men and 2 boy can do the same work in 8 day .in how many days can 2 men and 1 boy do the work ?

If 1 degree equal to 60 minutes then find the value of 1minute

Verify the property a×(b+c)=a×b+a×c by taking a=4/11 b=-33/8,c=7/4 solve

Solve the following [[125-1/3]]5]0

Find the compound interest on Rs 5000at 12% p.a. for 1.5 years , if the interest is compounded annually .