Aptitude : : Square root and Cube root Questions & Answers

  1. $ \sqrt{248+\sqrt{16}} $

A. 21

B. 14

C. 12

D. 16

  1. If $a$ = 0.2917, then the value of $ \sqrt{4a^2-4a+1}+3a $ is :

A. 0.5834

B. 0.2917

C. 1.2917

D. 2.2917

  1. $ \sqrt{0.000256\times ?} =1.6 $

A. 0.1

B. 10

C. 10000

D. 1000

  1. $ \sqrt{0.0576\times ?} =0.24 $

A. 1

B. 10

C. 0.1

D. 0.01

  1. $ \left(\sqrt{7}- \dfrac{1}{\sqrt{7}}\right)^2 $

A. $ \dfrac{36}{\sqrt{7}} $

B. $ \dfrac{7}{36} $

C. $ \dfrac{36}{7} $

D. $ \dfrac{7}{\sqrt{36}} $