I need this solution by tomorrow morning. Help Please.

I have 3 pieces of candy to place in 4 lunch boxes. In how many ways can I do this if:

(a) The candies are all different and the lunch boxes are all different?

I have 3 pieces of candy to place in 4 lunch boxes. In how many ways can I do this if:

(b) The candies are all the same and the lunch boxes are all the same?

The only difference is how many candies are in a lunch box

All in 1                               1

2 in 1 and 1 in another      1

all in different boxes          1

3 ways          

I have 3 pieces of candy to place in 4 lunch boxes. In how many ways can I do this if:

(c) The candies are all the same and the lunch boxes are all different?

All in 1                               4

2 in 1 and 1 in another      4*3=12

all in different boxes          4

4+12+4= 20 ways

I have 3 pieces of candy to place in 4 lunch boxes. In how many ways can I do this if:


(d) The candies are all different and the lunch boxes are all the same?

All in 1                               1

2 in 1 and 1 in another      3

all in different boxes    (one box is empty)   1     

5 ways 

I have 3 pieces of candy to place in 4 lunch boxes. In how many ways can I do this if:

(e) Exactly two of the candies are the same (but the third is different) and all of the lunch boxes are different?

All in 1                               4ways

2 the same  in 1 box and the odd one in another   4*3=12

2 different  in 1 box and the other in another          4*3=12

all in different boxes          4C2*2 = 6*2=12ways

4+12+12+12 = 40ways