Multiple choice

Find the missing number in the series:6, 11, 18, 27, 38, -----, 66.

  1. 58

  2. 54

  3. 51

  4. 59

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The differences between consecutive terms are 5, 7, 9, 11. The next difference should be 13. 38 + 13 = 51. Then 51 + 15 = 66, which matches.

AI explanation

The differences between consecutive terms of the series are 11 - 6 = 5, 18 - 11 = 7, 27 - 18 = 9, and 38 - 27 = 11. This forms a pattern of consecutive odd numbers, so the next difference must be 13. Adding 13 to 38 gives the missing number 51.

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