Lester and Terance each have marble collections. The number in Lester’s collection is a square number (1,4,9,16, etc.). Lester says to Terance, “If you give me all of your marbles, I’ll still have a square number.” Terance replies, “If you gave me the number in my collection, you would still be left with a square.” What is the least number of marbles Lester has?

Answer
Lester has 25 marbles and Terance has 24 marbles.