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 - √535.9225= ?

A - 23.45

B - 28.25

C - 23.15

D - 24.15

Answer : C

Explanation

√535.9225 = √(23.15 x 23.15) = 23.15

Q 2 - √?/200 = 0.02

A - 0.4

B - 4

C - 16

D - 1.6

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:

A - 5

B - 8

C - 10

D - 12

Answer : C

Explanation

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

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 √256 /√x= 2, then x is equal to:

A - 64

B - 128

C - 512

D - 1024

Answer : A

Explanation

let √256/√x =2 . then √x= √256/2 = 16/2 =8 ⇒ x=(8*8) =64

Q 6 - √ (25/81-1/9) = ?

A - 2/3

B - 4/9

C - 16/81

D - 25/81

Answer : B

Explanation

   √ (25/81-1/9) =√ (25-9)/81   = √16/81  = 4/9 

Q 7 - Given √2 =1.414 . The value of √8 + 2 √ 32 - 3 √128 + 4 √50) is

A - 8.426

B - 8.484

C - 8.526

D - 8.876

Answer : B

Explanation

(√8+2√32-3√128+4√50)=(√4*2+2√16*2-3√64*2+4√25*2)
=(2√2+2*4√2-3*8√2+4*5√2)
=(2√2+8√2-24√2+20√2)= 6√2   = (6*1.414)=8.484

Q 8 - if 1120/ √ p =80 ,Then p =?

A - 14

B - 140

C - 196

D - 225

Answer : C

Explanation

1120/ √p= 80 ⇒ √p =1120/80 =14 ⇒ P=(14*14) = 196

Q 9 - if √2 =1.4142, then the value of √2/9 is:

A - 0.2321

B - 0.4714

C - 0.3174

D - 0.4174

Answer : B

Explanation

√2/9 = √2/3 = 1.4142/3  = 0.4714

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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