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 - √17161 =?

A - 129

B - 119

C - 131

D - 141

Answer : C

Explanation

√17161 = √(131 x 131) = 131

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 - if √2ⁿ=64, Then the value of n is:

A - 2

B - 4

C - 6

D - 12

Answer : D

Explanation

√2ⁿ = 64= 2⁶⇒ 2ⁿꜘ2=2⁶⇒n/2=6 ⇒ n=12.

Answer : A

Explanation

√0.001 + √0.0064 = √0.01+0.08  = √0.09 = 0.3

Q 5 - √0.441 /√0.625 = ?

A - 0.048

B - 0.084

C - 0.48

D - 0.84

Answer : D

Explanation

√0.441/√0.625 = √441/625  =21/25= 0.84
[As, No. of decimel places in Nr = no.of decimal places in dr]

Q 6 - if √1369 + √0.615+x = 37.25, Then the value of x is

A - 10‾ⁱ

B - 10 ‾2

C - 10 ‾3

D - none of these

Answer : D

Explanation

√1369 +√ 0.615+x= 37.25  ⇒√ 0.615+x= 0.25 =25/100 =1/4
⇒ 0.615+x=1/16 ⇒ 0.615*16+16x=1 ⇒ 615/10000*16+16x=1
⇒  16x =1-123/125= 2/125  ⇒ x=  (2/125*1/16) = 1/1000 = 1/(10)3

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 - 48√? +32√? =320

A - 4

B - 8

C - 16

D - 24

Answer : C

Explanation

let 48√x+32√x=320 .then 80√x=320  ⇒√x=320/80 ⇒x= 42=16

Q 9 - √(x/169) = 18/13, then x= ?

A - 108

B - 324

C - 2916

D - 4800

Answer : B

Explanation

x/169  = 18/13* 18/13⇒ x= 324

Q 10 - √0.4 =?

A - 0.2

B - 0.02

C - 2

D - 0.632

Answer : D

Explanation

√0.4 = √ 0.632 * 0.632 = 0.632


aptitude_squares_cubes.htm

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