In the USA, there are coins of 1 cent, 5 cents, 10 cents, 25 cents, 50 cents and 1 dollar.
You can pay one dollar using either one coin (100), or two coins (50 + 50), or three (50 + 25 + 25), or four (25 + 25 + 25 + 25), etc.

What is the smallest number such that you cannot pay $1 with that many coins?

the answer is:

1 50cent piece, 1 quarter, 3 dimes, and 4 pennies. sure it may equal $1.09 but there is no way you can make change for a dollar with that.

Posted by sherwin on 2004-07-19 06:01:59