20x1p
18x1p + 1x2p
16x1p + 2x2p
15x1p + 1x5p
14x1p + 3x2p
13x1p + 1x2p + 1x5p
12x1p + 4x2p
11x1p + 2x2p + 1x5p
10x1p + 2x5p
10x1p + 1x10p
8x1p + 6x2p
8x1p + 1x2p+ 2x5p
8x1p + 1x2p+ 1x10p
6x1p + 7x2p
6x1p + 2x2p+ 2x5p
6x1p + 2x2p+ 1x10p
5x1p + 3x5p
5x1p + 1x5p + 1x10p
4x1p + 8x2p
4x1p + 3x2p + 2x5p
4x1p + 3x2p + 1x10p
3x1p + 1x2p + 3x5p
3x1p + 1x2p + 1x5p + 1x10p
2x1p + 9x2p
2x1p + 4x2p + 2x5p
2x1p + 4x2p + 1x10p
1x1p + 2x2p + 3x5p
1x1p + 2x2p + 1x5p + 1x10p
10x2p
5x2p + 2x5p
5x2p + 1x10p
4x5p
2x5p + 1x10p
2x10p
I think those are all the ways but there may be more.
* * * * *
There are at least 5 more:
9*1p + 3*2p + 1*5p
7*1p + 4*2p + 1*5p
3*1p + 6*2p + 1*5p
1*1p + 7*2p + 1*5p
1*20p
40 ways.
21 ways
A Crown (25p) and a 5p.
10+10+5+2=27
The simplest way is 2*10p
150 10p coins.
how many ways to make 25p using 1p 2p 5p 10p 20 coins
21 ways
There are 47 ways using 5p, 10p, 20p and 50p.
40 ways.
22
5p+5p
There are 201 ways.
There are 47 ways.
6458546
There are 201 ways and I regret that I do not have the will to list them. One of each coin or 38 of 1p coins are the 2 extremes.
I make it 4,562.