Question

Choose the correct answer from the alternatives given :
The number of boys in a class is four times the number of girls. Which one of the following numbers cannot represent the total number of children in the class?

• A. 5
• B. 16
• C. 30
• D. 40

Answer 1

The correct option is B 16

Assume we have x number of boys and y number of girls.
Then,
Total students = x + y = 4y + y = 5y
$\Rightarrow$ Number of students must be a multiple of 5.
$\Rightarrow$ Number cannot be 16 as it is not a multiple of 5.