Multiple choice general knowledge math & puzzles

1,2,3,1,4,9,1,8,_

  1. 22

  2. 26

  3. 27

  4. 16
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sequence is composed of three interleaved patterns: the first is a constant '1' (1st, 4th, 7th terms); the second is 2, 4, 8 (powers of 2); the third is 3, 9, 27 (powers of 3). The 9th term follows 3 and 9, so 3^3 = 27.

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