Multiple choice general knowledge math & puzzles

Complete the series: 6, 6, 7, 9, 8, ?

  1. 8

  2. 7

  3. 6

  4. 5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sequence consists of two interleaved series. Series 1: $6, 7, 8$ (increasing by 1). Series 2: $6, 9, ?$ (increasing by 3). However, another logic is $6+0, 6+1, 7+2, 9-1, 8-2=6$. Given the options, $6$ is the intended answer following a fluctuating pattern.

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