Multiple choice general knowledge

7,12,19,__,39

  1. 26

  2. 28

  3. 30

  4. 32
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern is n^3-1: 2^3-1=7, 3^3-1=26, 4^3-1=63... Wait, that's wrong. Let me recalculate: 7=2^3-1, 12=3^3+3, 19=4^3+3... That doesn't work. Actually: 7, 12, 19, __, 39. Differences: +5, +7, +9, +11. So missing term is 19+9=28, and 28+11=39 checks out.

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