Multiple choice general knowledge math & puzzles

1, 1, 2, 3, 5, 8, 13, 21, x

  1. 34

  2. 26

  3. 30

  4. 29

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

This is the classic Fibonacci sequence where each term is the sum of the two preceding terms: 1+1=2, 1+2=3, 2+3=5, 3+5=8, 5+8=13, 8+13=21, so 13+21=34. The sequence continues infinitely following this simple rule.