Square Roots and Cube Roots | Aptitude Questions

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Q21. $\mathbf{1.5^{2}\times \sqrt{0.0225}=?}$

A. 0.3375

B. 0.0375

C. 3.275

D. 32.75

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Correct Answer : 0.3375

Q22. If y = 5, then what is the value of $\mathbf{10y\sqrt{y^{3}-y^{2}}}$ ?

A. 300

B. 200

C. 500

D. 100

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Correct Answer : 500

Q23. What is the square root of 0.16 ?

A. 0.4

B. 0.004

C. 0.04

D. 4

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Correct Answer : 0.4

Q24. $\mathbf{\sqrt{1.5625}=?}$

A. 1.45

B. 1.05

C. 1.25

D. 1.55

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Correct Answer : 1.25

Q25. $\mathbf{\sqrt{0.0169\times ?}=1.3}$

A. 10

B. 100

C. 10000

D. 1000

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Correct Answer : 100

Q26. If $\mathbf{\frac{52}{x}=\sqrt{\frac{169}{289}}}$ , the value of x is :

A. 68

B. 52

C. 58

D. 62

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Correct Answer : 68

Q27. If

$\mathbf{\sqrt{x}\div \sqrt{441}=0.02}$ , then the value of x is :

A. 1.64

B. 1.764

C. 2.64

D. 0.1764

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Correct Answer : 0.1764

Q28. The digit in the unit’s place in the square root of 15876 is :

A. 2

B. 4

C. 6

D. 8

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Correct Answer : 6

Q29. $\mathbf{\sqrt{.0025}\times \sqrt{2.25}\times \sqrt{.0001}=?}$

A. .075

B. .0075

C. 00075

D. .000075

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Correct Answer : 00075

Q30. The cube root of .000216 is:

A. 6

B. 77

C. 87

D. .06

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Correct Answer : .06

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