The answer depends on WHAT it is you are trying to make. If you cannot even be bothered to check your question is complete before posting it is it not a bit much to expect me to answer it?
150 10p coins.
how many ways to make 25p using 1p 2p 5p 10p 20 coins
21 ways
40
51
There are 6 ways using normal U.S coins, but their is probally a different amount using foreign coins....... :-)
There are 47 ways using 5p, 10p, 20p and 50p.
40 ways.
22
3
5p+5p
5