Multiple choice

In the following number series find the wrong term. 17 23 35 59 108 203 395

  1. 108

  2. 23

  3. 17

  4. 203

  5. 395

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Find the pattern using differences: 17, 23, 35, 59, 108, 203, 395. First differences: 6, 12, 24, 49, 95, 192. Second differences: 6, 12, 25, 46, 97. This doesn't show a clear pattern. Try another approach: 17 + 23 = 40 (close to 35), 23 + 35 = 58 (close to 59), 35 + 59 = 94 (not close to 108). Let me check if each term after the first two is sum of previous two: 17 + 23 = 40 ≠ 35. Not Fibonacci-style. The pattern might be: each term ≈ previous two terms minus something. At 108, the pattern clearly breaks - should be around 94 if following Fibonacci-style addition.