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complete the series: 4.8.9.13.14.18._______?

Correct answer: D. 19

  • A. 22
  • B. 32
  • C. 11
  • D. 19

Explanation

The terms follow an alternating pattern: 4 + 4 = 8, 8 + 1 = 9, 9 + 4 = 13, 13 + 1 = 14, and 14 + 4 = 18. The next term is 18 + 1 = 19, so option d is correct. The likely distractor is 22, which continues adding 4 instead of switching to the alternating addition of 1.

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