At this series: 6, 9, 7, 10, 8, 11... What number should come next?

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At this series: 6, 9, 7, 10, 8, 11... What number should come next?

Answer: C. 9 — Answer: 9 Key insight: the sequence alternates adding 3 and subtracting 2. 6 + 3 = 9 9 - 2 = 7 7 + 3 = 10 10 - 2 = 8 8 + 3 = 11 11 - 2 = 9 Therefore the next…

  1. A.

    14

  2. B.

    8

  3. C.

    9

  4. D.

    10

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Correct answer: C

Answer: 9

Key insight: the sequence alternates adding 3 and subtracting 2.

  • 6 + 3 = 9

  • 9 - 2 = 7

  • 7 + 3 = 10

  • 10 - 2 = 8

  • 8 + 3 = 11

  • 11 - 2 = 9

Therefore the next term in the series is 9.

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