There are eight ways to partition the number four: 4 = 3+1 = 1+3 = 2+2 = 1+1+2 = 1+2+1 = 2+1+1 = 1+1+1+1. Replace the plus signs with multiplication signs and add the products:
This sum is a Fibonacci number and this is NOT a coincidence!
Custom Search
We welcome your feedback, comments and questions about this site. You may also contribute your favorite math jokes, riddles, puzzles, trivia and fun stuff to add some math humor for others like yourself. Please submit your feedback via our Feedback page.