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 is the next number: 2, 3, 5, 8, 13, 21, ?

    Answer: 34

    Each term is the sum of the two preceding terms: 13 + 21 = 34.

  2. Which number comes next: 50, 25, 50, 25, 50, ?

    Answer: 25

    The sequence alternates between 50 and 25, so the next term is 25.

  3. Find the next term: 1, 3, 7, 15, 31, ?

    Answer: 63

    Each term equals (previous × 2) + 1, so 31 × 2 + 1 = 63.

  4. What is the next number: 10, 12, 15, 19, 24, ?

    Answer: 30

    Differences increase by 1 each step (2, 3, 4, 5, 6), so 24 + 6 = 30.

  5. Complete the series: 64, 32, 16, 8, 4, ?

    Answer: 2

    Each term is halved, so 4 ÷ 2 = 2.

  6. What comes next: 7, 14, 12, 24, 22, ?

    Answer: 44

    The pattern alternates ×2 and −2; 22 × 2 = 44.

  7. Find the next number: 6, 11, 21, 41, 81, ?

    Answer: 161

    Each term equals (previous × 2) − 1, so 81 × 2 − 1 = 161.