Students in Jakes class were numbered in order from 1 to 24. Jake was asked to choose classmates numbered with multiples of 5 to be in his group. Which number could be the number of a classmate in his group?
21
16
47
15
Out of the given options, the number that could be the number of a classmate in Jake's group is 15.
To find the numbers that are multiples of 5, we need to divide each number by 5. If there is no remainder, then the number is a multiple of 5.
Let's check each number:
1. 21/5 = 4 remainder 1 (not a multiple of 5)
2. 16/5 = 3 remainder 1 (not a multiple of 5)
3. 47/5 = 9 remainder 2 (not a multiple of 5)
4. 15/5 = 3 remainder 0 (a multiple of 5)
Therefore, the number that could be the number of a classmate in Jake's group is 15.