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Aptitude - Squares & Cubes Online Quiz

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.

Q 1 - √2500 +√961 = (?)²

Answer : D

Explanation

Let √(√2500+√961) =x². Then
x²= √(50+31) = √81= 9. ∴ x = √9 = 3

Q 2 - √?/200 = 0.02

Answer : C

Explanation

Let √x/200 =0.02 . Then √x=200*2/100= 4 ⇒ x=(4)²=16

Q 3 - if √4ⁿ =1024, then the value of n is:

Answer : C

Explanation

√4ⁿ=1024  =4⁵⇒4ⁿꜘ² =4⁵ ⇒ n/2 =5 ⇒ n=10

Q 4 - √1296/?= ?/2.25

Answer : D

Explanation

let √1296/x = x/2.25. then, 36/x=x/2.25
∴ x²= (36*225/100)=81
⇒ x=√81= 9

Q 5 - √0.000441 =?

Answer : C

Explanation

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

Q 6 - √0.00004761 = ?

Answer : B

Explanation

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

Q 7 - If √15625 = 125, then the value of(√15625+ √156.25+ √1.5625) is

Answer : C

Explanation

given exp.  √15625 + √ 15625/100 +√15625/10000
(125+125/10+125/100)= (125+12.5+1.25) = 138.75

Q 8 - ( √3- 1/√3)²= ?

Answer : B

Explanation

(√3-1/√3)²= (√3)²+(1/√3)²-2* √3*1/√3=  (3+1/3-2) =(1+1/3)=4/3

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

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 ?

Answer : C

Explanation

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

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