math
posted by Jamie .
How many different combinations of coins can total exactly $0.40?
I got 31 possible combinations

I only got 27
P N D Q
50 0 0 0
35 1
30 2
25 3
20 4
15 5
10 6
5 7
0 8 0 0
30 0 1 0
25 1 1
20 2 1
15 3 1
10 4 1
5 5 1
0 6 1 0
20 0 2
15 1 2
10 2 2
5 3 2
0 4 2
10 0 3
5 1 3
0 2 3
0 0 4 0
5 0 1 1
0 1 1 1
If you see only 3 numbers the last digit is 0
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