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Number Series Patterns Flashcards

7 cards from real CCAT 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 Patterns flashcards as text

  1. What comes next? 17, 14, 11, 8, 5, ___

    Answer: 2

    Each term decreases by 3, so 5 − 3 = 2.

  2. What comes next? 1, 2, 6, 24, 120, ___

    Answer: 720

    These are factorials: 1!, 2!, 3!, 4!, 5!, so next is 6! = 720.

  3. What comes next? 3, 7, 15, 31, 63, ___

    Answer: 127

    Each term is doubled then 1 is added: 63 × 2 + 1 = 127.

  4. What comes next? 50, 48, 44, 38, 30, ___

    Answer: 20

    Differences increase by 2 each step: −2, −4, −6, −8, −10, so 30 − 10 = 20.

  5. What comes next? 6, 12, 10, 20, 18, 36, 34, ___

    Answer: 68

    The pattern alternates: ×2, −2, ×2, −2…, so 34 × 2 = 68.

  6. What comes next? 2, 5, 11, 23, 47, ___

    Answer: 95

    Each term is doubled then 1 is added: 47 × 2 + 1 = 95.

  7. What comes next? 81, 64, 49, 36, 25, ___

    Answer: 16

    These are perfect squares in descending order: 9², 8², 7², 6², 5², so next is 4² = 16.