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 - 2592/ √?= 324

A - 144

B - 64

C - 16

D - 8

Answer : B

Explanation

Let 2592 /√x= 324 . Then, √x = 2592/324 = 8 ⇒ x= 64

Q 2 - 248 + √ 52 +√144

A - 14

B - 16

C - 16.6

D - 18.8

Answer : B

Explanation

Given exp.= √248  +√52+12  = √248+ √64 = √248+8   =√256 = 16

Q 3 - (0.324*0.081*4.624)/(1.5625* 0.0289* 72.9* 64) = ?

A - 24

B - 2.4

C - 0.024

D - 0.24

Answer : C

Explanation

Sum of decimel places being equal in numerator and denominator, we have
 Given Expression =   √324*81*4624/15625*289*729*64
= 18*9*68/125*17*27*8=3/125 =0.024

Q 4 - √4225-√1225+6 =√?

A - 1156

B - 1296

C - 1444

D - 1600

Answer : B

Explanation

√4225-√1225 +6=(65-35+6)=36.
Let  √x=36 .Then x =(36*36)=1296

Q 5 - if √841 = 29, then √0.00000841 = ?

A - 0.00029

B - 0.0029

C - 0.029

D - 0.29

Answer : B

Explanation

√0.00000841 =  √841/100000000 = 29/10000= 0.0029

Q 6 - If x * √0.0016 = 4 , then the value of x is :

A - 0.04

B - 4

C - 25

D - 100

Answer : D

Explanation

√0.0016 =  √16/10000  = 4/100 =0.04
∴ x*0.04 =4 ⇒ x = 4/0.04=  4*100/4 =100

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 - {(√2-1)2+( √2-1)2/(2-1)]/ [(√3-1)2+ (√3+1)2/(3-1)] = ?

A - 2/3

B - 3/2

C - 4

D - 6

Answer : B

Explanation

given Expression =
{(√2-1)2+( √2-1)2/(2-1)]/ [(√3-1)2+ (√3+1)2/(3-1)] =2(2+1)/1*2/2(3+1)= 3/2

Q 9 - if √3=1.732, then the value of 1/√3 is:

A - 0.617

B - 0.313

C - 0.577

D - 0.173

Answer : C

Explanation

1/√3 = 1/√3*√3/√3= 3√3/3 = 1.732/3=   0.577.

Q 10 - An army general wants to form a solid square from 36562 armies. After arrangement , he found some armies left. How many armies were left ?

A - 36

B - 65

C - 81

D - 97

Answer : C

Explanation

 191 * 191 = 36481, ∴ armies left = 36562 - 36481 = 81

aptitude_squares_cubes.htm
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