# Find theTotal Number of Children in The Class?

The number of boys in a class is three times the number of girls. Which one of the follow numbers *cannot* represent the total number of children in the class?

- 48
- 44
- 42
- 40

**Answer: (3) 42**

**Explanation:-
**Let the number of children be X

The number of boys in a class is three times the number of girls.

Then, the number of girls = X

Therefore, the number of boys = 3 X

So, the total number of children = X + 3 X

= 4 X

Then, the number of children must be divisible by 4.

Here, only 48, 44 and 40 are the divisible by 4 and 42 is not divisible by 4.

Then, 42 cannot represent the total number of children in the class.

Hence, the answer is (3) 42.