Question

Can anybody answer this? What is the fewest number of marbles that Jeff could have?
Here are the clues:
When he puts them in groups of 3, there are no marbles remaining.
When he puts them in groups of 2 or 5, there is one marble left

Answer 1

21?

Answer 2

thats right how did you do that?

Answer 3

Went up by multiples of 3 until I found one that worked

Answer 4

thanks