41
40 ways.
I make it 4,562.
7
41
9
How many fives are worth 20p
How many 20ps do I need to make up£2
The answer is 100/(20p) = 5/p
20p
1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
There are 10 ways.