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Numerical Series Patterns Flashcards

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

Read the first 7 Numerical Series Patterns flashcards as text
  1. What is the next number: 3, 5, 9, 17, 33, ?

    Answer: 65

    Each term after the first is found by doubling the previous term and subtracting 1: 33 × 2 − 1 = 65.

  2. Find the missing number: 81, 27, 9, 3, ?

    Answer: 1

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

  3. Complete the sequence: 6, 11, 16, 21, 26, ?

    Answer: 31

    Each term increases by 5, so 26 + 5 = 31.

  4. What comes next: 2, 6, 12, 20, 30, ?

    Answer: 42

    The differences are 4, 6, 8, 10, 12 — increasing by 2 each time, so 30 + 12 = 42.

  5. Find the next value: 144, 121, 100, 81, 64, ?

    Answer: 49

    These are perfect squares in descending order (12², 11², 10², 9², 8²), so the next is 7² = 49.

  6. What is the next term: 4, 8, 24, 96, 480, ?

    Answer: 2880

    The multipliers are ×2, ×3, ×4, ×5, ×6 — each increases by 1, so 480 × 6 = 2880.

  7. Complete the series: 17, 14, 11, 8, 5, ?

    Answer: 2

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