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CogAT Quantitative Number Series Flashcards

6 cards from real CogAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 CogAT Quantitative Number Series flashcards as text

  1. What number comes next in the series: 2, 5, 8, 11, __?

    Answer: 14

    Each number increases by 3, so after 11 comes 14.

  2. What number comes next in the series: 81, 27, 9, 3, __?

    Answer: 1

    Each number is divided by 3, so 3 ÷ 3 = 1.

  3. What number comes next in the series: 7, 14, 21, 28, __?

    Answer: 35

    These are multiples of 7, so after 28 (7×4) comes 35 (7×5).

  4. What number comes next in the series: 2, 3, 5, 7, 11, 13, __?

    Answer: 17

    These are prime numbers in order, and the next prime after 13 is 17.

  5. What number comes next in the series: 50, 44, 38, 32, __?

    Answer: 26

    Each number decreases by 6, so after 32 comes 26.

  6. What number comes next in the series: 1, 8, 27, 64, __?

    Answer: 125

    These are perfect cubes (1³, 2³, 3³, 4³), so the next is 5³ = 125.