SOLUTION: How many different sums of money can be formed by choosing 1 or more coins from 4 different kinds of coins?

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Question 1193261: How many different sums of money can be formed by choosing 1 or more coins
from 4 different kinds of coins?

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

Formally, there are 2%5E4 = 16 different subsets, including empty subset and improper subset.

So, we can expect 16 different sums *), in general case, including the zero sum as one of possible options.

If choosing one or more coins, then the answer is 15 different sums.

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*) if there is no degeneracy . . .