A small coin nano-challenge

[Gerson W. Barbosa]

(03-23-2019 10:32 AM)brickviking Wrote:  Does anyone know of a currency where there's only one solution?

The Swedish crown, for instance:

{ 1 kr, 2 kr, 5 kr, 10 kr } -> a = 1 kr; b = 5 kr; c = 2 kr.

I should have written a small program that ran through all possibilities, as I’ve done on the HP-75C. BTW, here we have two solutions as well: { 0,05; 0,25; 0;10 } and { 0,50; 1,00; 0,25 }, from the coin set { 0,01; 0,05; 0,10; 0,25; 0,50; 1,00 } (The R$ 0,01 copper coin apparently doesn’t circulate anymore, but has been taken into account).