Can anyone help me with these questions I want a detailed an

Can anyone help me with these questions ,I want a detailed answer for the questions

(5)(1 pt) Bill was sent to the store to but 12 sandwiches. The store has four kinds of sandwiches. The store has lots of two of the kinds, but only has 4 left of two of the kinds. How many ways can Bill buy the sandwiches? (6)(1 pt) Benjamin is going to by 12 gum balls from six gum ball machines? The blue, green and red machines are full of gum balls, but there are one 2 gum balls in the yellow machine, there are only 3 gum balls in the purple machine and there arc only four gum balls in the black machine? How many ways can Benjamin buy the gum balls?

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