In how many ways type of question
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In how many ways type of question

[From: ] [author: ] [Date: 12-05-12] [Hit: ]
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In how many ways we could give 81 cents change if we only have 2 and 5 cent coins.
Answer is 8

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Max sum of 5 cents = 75 because if it goes to 80 then a 2 cent will make it 82
Sum of 5 cents + sum of 2 cents = 81 cents
Following are the combinations:
75+6
65+16
55+26
45+36
35+46
25+56
15+66
5+76
1
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