Question

Girl made cookies. The number of cookies she made is a multiple of 3 and 5 but not a multiple of 2. How many cookies did she make?

A) 25
B) 30
C) 45
D) 51

Answer 1

The number the girl made is 45, which is the only option that is a multiple of 3 and 5 but not a multiple of 2, hence it's an odd number.

Step-by-step explanation:

The student asked about a number that is a multiple of 3 and 5 but not a multiple of 2, which refers to a number that is divisible by both 3 and 5 and is also odd. Going through the choices given:

• 25 is divisible by 5 but not by 3.
• 30 is divisible by 3, 5, and also by 2, so it's not odd.
• 45 is divisible by both 3 and 5 and is odd, which makes it the correct answer.
• 51 is divisible by 3 but not by 5.

So, the girl must have made 45 cookies.