Question

Stacy has $5$ balls and Ben has $6$ balls. Which of the following options is correct?

• A. None of the above is correct.
• B. Stacy has an odd number of balls.
• C. Both a and b are correct.
• D. Ben has an even number of balls.

Answer 1

The correct option is C Both a and b are correct.

Stacy has $5$ balls.

When we group $5$ balls in pairs, one ball gets left out.
We cannot group all $5$ balls in pairs.
So, Stacy has an odd number of balls.
Ben has $6$ balls.

We can group all $6$ balls in pairs
So, Ben has an even number of balls.