Solution to Problem 260
Correct solutions came from Nicolas Halabi, Bradley University; Vincent Lynch, UK; Al Zimmermann, USA; Philippe Fondanaiche, France; Ahron Teitelman, Israel; Brett Hendricks, USA; Bill Webb, USA; Jens Voβ, Germany; Jack Tseng; Jerome Cherry, Canada; Lou Cairoli, USA; John Snyder, USA; Ron Welch, USA, Farid Lian, Colombia.
| There are 293 ways to make change, if you
use a dollar coin, and 292 without the dollar coin.
Solutions included the following techniques: (a) brute force counting, (b) computer programs, (c) recursion, (d) generating functions. You are visitor number 1527 to this page. |