題組內容

There are 7 problems in this test. No calculators are allowed. Write down detailed steps for the solution to each problem. Otherwise, no credits for that problem will be given.

6. Fibonacci numbers are deined as f0 = 0, f1= 1 and 61e13651a6648.jpg for n >.1. Show that 61e1367566554.jpg is even, for every positive integer k. .