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 - √64009= ?

A - 803

B - 363

C - 253

D - 347

Answer : C

Explanation

√64009 = √(253 x 253) = 253

Q 2 - √32+√48/ √8+√12 = ?

A - √2

B - 2

D - 8

Answer : B

Explanation

(√32+√48)/( √8+√12) =(√16*2 +√16*3)/ √4*2 +√4*3)
= 4√2+4√3/ 2√2+2√3  = 4(√2+√3)/ 2(√2+√3) =2

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 - √0.00059049 = ?

A - 0.243

B - 0.0243

C - 0.00243

D - 0.000243

Answer : B

Explanation

given expression  =√59049/100000000 = 243/10000 = 0.0243

Q 5 - √(0.00001225/0.00005329)=?

A - 25/73

B - 35/73

C - 25/77

D - 5/11

Answer : B

Explanation

Number of decimel places in the numerator = no.of decimel places in the denominator
∴ given expression = √(1225/5329) = √(35 * 35)/(73 * 73) = 35/73

Q 6 - if 52/x=√(169/289), Then the value of x is

A - 52

B - 58

C - 62

D - 68

Answer : D

Explanation

52/x  = √169/289 = 13/17
∴  13x =(52*17) ⇒ x=(52*17)/13 =68

Q 7 - The value of √3+1/√3-1+ √3-1/√3+1 is:

A - 1

B - 2

C - 2√3

D - 4

Answer : D

Explanation

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

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 - (√7+ √5 )/(√7-√5) = ?

A - 1

B - 6+√35

C - 2

D - 6-√35

Answer : B

Explanation

(√7+√5/√7-√5)= (√7+√5/√7-√5)* (√7+√5/√7+√5)
=((√7+√5)2/(7-5)  = 7+5+2√35/2= 12+2√35/2  =6+√35

Q 10 - √0.9 =?

A - 0.3

B - 0.03

C - 0.33

D - 0.94

Answer : D

Explanation

√0.9  = √ 0.94 * 0.94 = 0.94


aptitude_squares_cubes.htm

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