Find the Missing Number in the series 1, 6, 13, 22, 33 ?
Correct answer: C. 46
- A. 36
- B. 40
- C. 46
- D. 52
Explanation
The successive differences are 5, 7, 9 and 11, increasing by 2 each time. The next difference is therefore 13, giving 33 + 13 = 46. The likely wrong choice is 40, which comes from failing to continue the increasing odd-difference pattern.
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