Aptitude - Squares & Cubes Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Squares & Cubes. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - 6250/ √? = 625

A - 100

B - 95

C - 110

D - 105

Answer : A

Explanation

Let 6250/√x=  625. Then √x= 6250/625 = 10 ⇒ 100

Q 2 - √288/√128 =?

A - √3/2

B - 2/√3

C - 3/2

D - √3/21

Answer : C

Explanation

√288/√128 =√(288/128) = √(144/64) = √144/√64 =12/8 =3/2

Q 3 - given that √3= 1.732, the value of 3 +√6 /(5√3-2√12 -√32+√50)is:

A - 4.899

B - 2.551

C - 1.414

D - 1.732

Answer : D

Explanation

Given exp = 3+√6/(5√3-2√4*3-√16*2+ √25*2)
= 3+√6/(5√3-4√3-4√2+5√2)
= (3+√6)/( √3+√2)*( √3-√2)/( √3-√2)
= 3√3-3√2+√18-√12/(3-2)
=(3√3-3√2+√9*2 -√4*3 )= (3√3-3√2+3√2-2√3) =√3= 1.732

Q 4 - 36.1/102.4 =?

A - 29/32

B - 19/72

C - 19/32

D - 29/62

Answer : C

Explanation

√36.1/102.4  = √361/1024 = √361/ √1024 =19/32

Q 5 - √0.000441 =?

A - 0.00021

B - 0.0021

C - 0.021

D - 0.21

Answer : C

Explanation

given Expression = √441/1000000 = 21/1000 =0.021

Q 6 - √0.00004761 = ?

A - 0.00069

B - 0.0069

C - 0.0609

D - 0.069

Answer : B

Explanation

√  0.00004761  =  √4761/100000000  =69/10000=  0.0069

Q 7 - if √4096=64 , then the value of (√40.96 + √ 0.4096 + √0.004096 + √ 0.00004096) up to two places of decimal is :

A - 7.09

B - 7.10

C - 7.11

D - 7.12

Answer : C

Explanation

Given exp . √ 4096/100 +√ 4096/10000+√ 4096/1000000+√ 4096/100000000
=(64/10+ 64/100+64/1000+64/10000)= (6.4+0.64+0.064+0.0064+0.0064)= 7.11

Q 8 - if (5+ 2√3)/(7+ 4 √ 3) = a+b√3 , then

A - a= -11 , b=-6

B - a= -11, b= 6

C - a= 11, b=-6

D - a= 6, b= 11

Answer : C

Explanation

a+b√3 = (5+2√3/ 7+4√3* 7-4√3/7-4√3)
=  (35-20√3+14√3-24)/(49-48) = 11-6√3

Q 9 - if √2 = 1.4142, then the value of 7/(3+√2) is:

A - 1.5858

B - 4.4142

C - 3.4852

D - 3.5858

Answer : A

Explanation

7/(3+√2)= 7/(3+√2)*(3-√2)/(3-√2)
=7*(3-√2)/(9-2)=(3-√2)
= (3-1.414)=1.58

Q 10 - √(0.16/0.4) =?

A - 0.2

B - 0.02

C - 0.632

D - 2√5/5

Answer : C

Explanation

√0.16/0.40 = √16/40  = √2/√5*√5*√5 = √10/5 =3.162/5 =0.632

aptitude_squares_cubes.htm
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