Practice Test Geeks(CFAT) Canadian Forces Aptitude Test Practice Test
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Problem Solving: Number Series Flashcards

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

Read the first 7 Problem Solving: Number Series flashcards as text

  1. What comes next: 1, 8, 27, 64, 125, ?

    Answer: 216

    These are perfect cubes (1³, 2³, 3³, 4³, 5³), so the next is 6³ = 216.

  2. What is the next term: 5, 6, 8, 11, 15, 20, ?

    Answer: 26

    Differences increase by 1 each step (1, 2, 3, 4, 5, 6), so 20 + 6 = 26.

  3. Complete the series: 3, 6, 12, 24, 48, ?

    Answer: 96

    Each term is doubled, so 48 × 2 = 96.

  4. Find the missing number: 9, 16, 25, 36, 49, ?

    Answer: 64

    These are perfect squares starting at 3² — the next is 8² = 64.

  5. What comes next: 100, 50, 52, 26, 28, ?

    Answer: 14

    The pattern alternates ÷2 and +2; 28 ÷ 2 = 14.

  6. What is the next number: 4, 7, 12, 19, 28, 39, ?

    Answer: 52

    Differences are consecutive odd numbers (3, 5, 7, 9, 11, 13), so 39 + 13 = 52.

  7. Find the next term: 1, 1, 2, 3, 5, 8, 13, ?

    Answer: 21

    Each term is the sum of the two preceding terms: 8 + 13 = 21.