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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? 3, 6, 12, 24, ?

    Answer: 48

    Each term doubles, so 24 x 2 = 48.

  2. What number comes next? 1, 4, 9, 16, ?

    Answer: 25

    These are perfect squares, so the next is 5 squared = 25.

  3. What number is missing? 7, 14, ?, 28, 35

    Answer: 21

    The series counts up by 7, so the missing term is 21.

  4. What number comes next? 100, 90, 80, 70, ?

    Answer: 60

    Each term decreases by 10, so 70 - 10 = 60.

  5. What number comes next? 2, 5, 11, 23, ?

    Answer: 47

    Each term doubles and adds 1, so 23 x 2 + 1 = 47.

  6. What number is missing? 5, 10, 20, ?, 80

    Answer: 40

    Each term doubles, so 20 x 2 = 40.

  7. What number comes next? 81, 27, 9, 3, ?

    Answer: 1

    Each term is divided by 3, so 3 / 3 = 1.