Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

What is √(4320) × √(4320)?

### Question 2

If $√2$ = 1.41, then what is the value of ${√2}/5$ − $13/{√2}$ + $√8$?

**A**

-6.081.

**B**

+6.081.

**C**

-6.009.

**D**

+6.009.

**Soln.**

**Ans: a**

The given expression can be simplified to ${{(√2)^2} - {5 × 13} + {5 × √2 × √{2 × 2^2}}}/{5 × √2}$, which is same as ${2 - 65 + 20}/{5 × √2}$, which is same as ${-43/{5 × √2}$. Rationalizing, we get ${-43/{5 × √2} × {√2/√2}$ which gives ${-43√2}/10$ which = -6.081.

### Question 3

What is the value of ${√5}/3$ − $2/{√5}$?

**A**

${-1√5}/15$.

**B**

${+1√5}/15$.

**C**

${-2√5}/15$.

**D**

${+2√5}/15$.

**Soln.**

**Ans: a**

The given expression can be simplified to ${{(√5)^2} - 3 × 2}/{3 × √5}$, which is same as ${5 - 6}/{3 × √5}$, which is same as ${-1/{3 × √5}$. Rationalizing, we get ${-1/{3 × √5} × {√5/√5}$ which gives ${-1√5}/15$

### Question 4

What is √0.0036?

### Question 5

If x = 0.7342, then what is the value of $11x + √{16x^2 - 8x + 1}$?

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This Blog Post/Article "Square and Cube Roots Quiz Set 017" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-05-17.