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Number Sequences and Patterns Flashcards

7 cards from real IBEW 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 Sequences and Patterns flashcards as text

  1. What is the next term: 0.5, 1, 2, 4, 8, ___?

    Answer: 16

    Each term doubles, so 8 × 2 = 16.

  2. Find the missing number: 1, 1, 2, 3, 5, 8, ___, 21?

    Answer: 13

    This is the Fibonacci sequence where each term equals the sum of the prior two: 5 + 8 = 13.

  3. What is the next value: 120, 60, 30, 15, ___?

    Answer: 7.5

    Each term is halved, so 15 ÷ 2 = 7.5.

  4. Which number comes next: 4, 9, 16, 25, 36, ___?

    Answer: 49

    These are perfect squares (2², 3², 4², 5², 6²), so the next is 7² = 49.

  5. Complete the sequence: 13, 26, 24, 48, 46, 92, ___?

    Answer: 90

    The pattern alternates ×2 and −2, so 92 − 2 = 90.

  6. What is the next number: 1000, 500, 250, 125, ___?

    Answer: 62.5

    Each term is halved, so 125 ÷ 2 = 62.5.

  7. Find the next term: 2, 4, 3, 9, 4, 16, 5, ___?

    Answer: 25

    The sequence alternates counting numbers and their squares: 5's square is 25.