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Number Series and Pattern Recognition Flashcards

7 cards from real EIAT 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 and Pattern Recognition flashcards as text

  1. What number comes next: 81, 27, 9, 3, ___?

    Answer: 1

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

  2. Find the missing number: 2, 6, 12, 20, ___, 42.

    Answer: 30

    The differences increase by 2 each step (4, 6, 8, 10, 12), so 20 + 10 = 30.

  3. What comes next: 1, 4, 9, 16, 25, ___?

    Answer: 36

    These are perfect squares (1², 2², 3², 4², 5²), so the next is 6² = 36.

  4. Find the next number: 3, 7, 15, 31, ___?

    Answer: 63

    Each term follows the rule ×2 + 1, so 31 × 2 + 1 = 63.

  5. What is missing: 0, 1, 3, 6, 10, ___?

    Answer: 15

    These are triangular numbers; differences increase by 1 each step, so 10 + 5 = 15.

  6. What comes next: 48, 24, 12, 6, ___?

    Answer: 3

    Each term is halved, so 6 ÷ 2 = 3.

  7. Find the next number: 5, 11, 23, 47, ___?

    Answer: 95

    Each term follows the rule ×2 + 1, so 47 × 2 + 1 = 95.