Advertisement

### Question

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?

**A**

12.

**B**

9.

**C**

16.

**D**

10.

**Soln.**

**Ans: a**

Let the number of boxes = n. So balls in one box are also n, and therefore, balls in n boxes = $n^2$. We have been given $n^2 = 144$, which gives n = 12.