Question 565188
Multiples of 5 less than 30: 0, 5, 10, 15, 20, 25


Since 2 is NOT a factor, we cross out 0, 10, and 20



So we're left with: 5, 15, 25


The number is NOT prime, so 5 is out. The number is NOT a square, so 25 is also out.



So the answer is 15.