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Number Series Flashcards

7 cards from real CAT4 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Number Series flashcards as text

  1. What number comes next? 1, 1, 2, 3, 5, ?

    Answer: 8

    Each term is the sum of the two before it, so 3 + 5 = 8.

  2. What number is missing? 12, ?, 24, 30, 36

    Answer: 18

    The series increases by 6, so 12 + 6 = 18.

  3. What number comes next? 50, 45, 40, 35, ?

    Answer: 30

    Each term drops by 5, so 35 - 5 = 30.

  4. What number comes next? 4, 8, 16, 32, ?

    Answer: 64

    Each term doubles, so 32 x 2 = 64.

  5. What number is missing? 2, 6, 12, 20, ?

    Answer: 30

    Differences increase by 2 each time (4, 6, 8, 10), so 20 + 10 = 30.

  6. What number comes next? 1, 3, 6, 10, 15, ?

    Answer: 21

    These are triangular numbers; adding 6 gives 15 + 6 = 21.

  7. What number comes next? 64, 32, 16, 8, ?

    Answer: 4

    Each term is halved, so 8 / 2 = 4.