I can't understand this question what exactly want from us what's related between 3 3 10 or 1 2 3 60 I don't get it anybodey here how can describe this question for me :)

There is 10 different ways to store 6 (= 3 + 3) diamonds in two same coffers with capacity 3.

There is 60 different ways to store 6 (= 1 + 2 + 3) diamonds in three different coffers with 1 and 2 and 3 capacities.

This is a simple counting problem but note that: 1.Diamonds are different. 2.Coffers with same capacity are considered same.