How many different ways can you make 50p using 5p, 10p or 20p coins?

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How many different ways can you make 50p using 5p, 10p or 20p coins?
posted Jun 27, 2017

> `Total 12 different ways.`

1. include two 20p coin - remaining are 10p can be completed by 2 ways ( include one or zero 10p coin ) -->> 2 methods
2. include one 20p coin - remaining are 30p can be completed by 4 ways ( include three or two or one or zero 10p coin ) -->> 4 methods
3. include zero 20p coin - remaining are 50p can be completed by 6 ways ( include 5/4/3/2/1/0 - 10p coin ) -->> 6 methods
Total 2+4+6 = 12 methods.