Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

Each box of a almirah has as many balls as is the total number of boxes in that almirah. If there are 144 balls in all, how many boxes are there?

### Question 2

What is the value of $x$ in $√{0.0016 × x}$ = 0.4?

### Question 3

How many 4 digit numbers are their whose squares end in 2?

### Question 4

If $4√5 + √80 = 17.89$, then what is the value of $√125 + 6√5$?

**A**

24.60.

**B**

12.25.

**C**

25.

**D**

12.96.

**Soln.**

**Ans: a**

The given expression can be rearranged like this: $4√5 + √{4^{2} × 5}$, which is same as $4√5 + 4√5$ which is same as $8√5 = 17.89$, from which we get $√5 = 2.24$. Next we can see that $√125 + 6√5$ is same as $√{5^{2} × 5} + 6√5$, which is same as $11√5$, which gives $11 × 2.24$ = 24.60.

### Question 5

If $5√3 + √108 = 19.05$, then what is the value of $√27 + 3√3$?

**A**

10.39.

**B**

10.64.

**C**

10.172.

**D**

10.81.

**Soln.**

**Ans: a**

The given expression can be rearranged like this: $5√3 + √{6^{2} × 3}$, which is same as $5√3 + 6√3$ which is same as $11√3 = 19.05$, from which we get $√3 = 1.73$. Next we can see that $√27 + 3√3$ is same as $√{3^{2} × 3} + 3√3$, which is same as $6√3$, which gives $6 × 1.73$ = 10.39.

### More Chapters | See All...

Surds and Indices | Paper Cutting | Stocks and Shares | Mirror Images | Decimal Numbers | Essential Part | Pipes and Cisterns | Cubes and Dice | Problems on Trains | Profit and Loss | More...

This Blog Post/Article "Square and Cube Roots Quiz Set 006" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-04-07.