In a certain country, it takes a minimum of exactly 5 coins to make 13 cents, and a minimum of exactly 4 coins to make 14 cents.

What are the denominations of the coins (of value less than 15 cents) in this country?

Bonus: What country is it?

I don't know if there are other sets, but 2 cents and 3 1/2 cents works, as 2 x (3 1/2) + 3 x 2 = 13 cents and 4 x (3 1/2) = 14 cents.

I don't know of any sets that avoid the fractional cent.

Posted by Charlie on 2003-06-15 05:42:52