Question

The number of girls in a class is $5$ times the number of boys. Which of the following cannot be the total number of children in the class?

• A. $24$
• B. $30$
• C. $35$
• D. $42$

Answer 1

Answer: (A), (B), (D)

$24$
$30$
$42$

Let number of girls $=$ $x$

Let the number of boys$=$ $y$

As per given condition $x=5y$

Total number of children $=$ $x+y$

$=$ $5y+y=6y$

So total number of children would be multiple of $6$.
Except $35$, all other numbers are multiples of $6$

Hence C is the correct answer.