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Weekly Problem 40 - 2006

Stage: 2 and 3 Challenge Level: Challenge Level:1

5p, 2p and 1p coins (or a mixture of any or all of these) are used to make a total of 11p. In how many different ways can this be done?
If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.  

This problem is taken from the UKMT Mathematical Challenges.

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