Advertisement

### Question

The sum of two numbers is 11. Their product is 28. One of the two numbers is?

**A**

7.

**B**

8.

**C**

6.

**D**

9.

**Soln.**

**Ans: a**

Let the numbers be $a$ and $11 - a$. We are given their product as a × (11 - a) = 28, which is a quadratic expression that can be simplified to $(a - 7) × (4 - a) = 0$. So the numbers could be 7 and 4.