Multiple choice general knowledge math & puzzles Given f(n+3) = f(n). If f(-1) = 6, then f(8) = 6. True False Reveal answer Fill a bubble to check yourself A Correct answer Explanation Since f(n+3) = f(n), the function has period 3. To find f(8), compute 8 - (-1) = 9, which is a multiple of 3 (9 = 3 × 3). Therefore f(8) = f(-1) = 6. The statement is true.