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Using only notes of denominations $5, $10, $20,
How many ways can you give me $100 using at most 6 $10 notes?

 Jul 24, 2020
 #1
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       5, 10, 20

1  = 20 0 0
2  = 18 1 0
3  = 16 2 0
4  = 14 3 0
5  = 12 4 0
6  = 10 5 0
7  = 8 6 0
8  = 16 0 1
9  = 14 1 1
10  = 12 2 1
11  = 10 3 1
12  = 8 4 1
13  = 6 5 1
14  = 4 6 1
15  = 12 0 2
16  = 10 1 2
17  = 8 2 2
18  = 6 3 2
19  = 4 4 2
20  = 2 5 2
21  = 0 6 2
22  = 8 0 3
23  = 6 1 3
24  = 4 2 3
25  = 2 3 3
26  = 0 4 3
27  = 4 0 4
28  = 2 1 4
29  = 0 2 4
30  = 0 0 5

 Jul 25, 2020

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