Square Roots and Cube Roots | Aptitude Questions

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Q11. The value of $\mathbf{\sqrt{0.000441}}$ is :

A. 0.21

B. 0.0021

C. 0.00021

D. 0.021

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Correct Answer : 0.021

Q12. $\mathbf{\sqrt{\frac{0.361}{0.00169}}=?}$

A. 19/13

B. 190/13

C. 1.9/130

D. 1.9/13

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Correct Answer : 190/13

Q13. The value of $\mathbf{\sqrt{0.01}+\sqrt{0.81}+\sqrt{1.21}+\sqrt{0.0009}}$ is:

A. 2.1

B. 2.03

C. 2.11

D. 2.13

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Correct Answer : 2.13

Q14. For what value of * the statement $\mathbf{(\frac{*}{15})(\frac{*}{135})=1}$ is true ?

A. 45

B. 35

C. 15

D. 25

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Correct Answer : 45

Q15. $\mathbf{\sqrt{\frac{.0196}{?}}=0.2}$

A. 4.9

B. 0.9

C. 0.49

D. 0.7

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Correct Answer : 0.49

Q16.

$\mathbf{\sqrt{53824}=?}$

A. 232

B. 202

C. 332

D. 242

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Correct Answer : 232

Q17. Given that $\mathbf{\sqrt{13}=3.605}$ and $\mathbf{\sqrt{130}=11.40}$ , find the value of $\mathbf{\sqrt{1.3}+\sqrt{1300}+\sqrt{0.013}}$ .

A. 37.164

B. 36.304

C. 36.164

D. 37.304

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Correct Answer : 37.304

Q18. $\mathbf{\sqrt{\frac{25}{81}-\frac{1}{9}}=?}$

A. 4/9

B. 25/81

C. 16/81

D. 2/3

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Correct Answer : 4/9

Q19. If $\mathbf{\sqrt{3^{n}}=729}$ , then the value of n is :

A. 12

B. 10

C. 8

D. 6

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Correct Answer : 12

Q20. If $\mathbf{x\times y=x+y+\sqrt{xy}}$ the value of $\mathbf{6\times 24}$ is :

A. 41

B. 42

C. 43

D. 44

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Correct Answer : 42

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