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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, 4, 6, 8, __?

    Answer: 10

    Each number increases by 2, so after 8 comes 10.

  2. What number comes next in the series: 3, 6, 12, 24, __?

    Answer: 48

    Each number doubles the previous one, so 24 × 2 = 48.

  3. What number comes next in the series: 100, 90, 80, 70, __?

    Answer: 60

    Each number decreases by 10, so after 70 comes 60.

  4. What number comes next in the series: 1, 4, 9, 16, __?

    Answer: 25

    These are perfect squares (1², 2², 3², 4²), so the next is 5² = 25.

  5. What number comes next in the series: 5, 10, 20, 40, __?

    Answer: 80

    Each number is multiplied by 2, so 40 × 2 = 80.

  6. What number comes next in the series: 1, 1, 2, 3, 5, 8, __?

    Answer: 13

    Each number is the sum of the two before it (Fibonacci), so 5 + 8 = 13.