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Mensa IQ Sequence Completion Flashcards

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

Read the first 7 Mensa IQ Sequence Completion flashcards as text

  1. What comes next in the sequence: 3, 6, 12, 24, 48, ___?

    Answer: 96

    Each term doubles the previous one, so 48 × 2 = 96.

  2. Find the missing number: 1, 4, 9, 16, 25, ___?

    Answer: 36

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

  3. What is the next term: 2, 5, 10, 17, 26, ___?

    Answer: 37

    The differences are 3, 5, 7, 9, 11 — odd numbers increasing by 2, so 26 + 11 = 37.

  4. Complete the sequence: 81, 27, 9, 3, ___?

    Answer: 1

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

  5. What comes next: Z, X, V, T, R, ___?

    Answer: P

    The sequence skips every other letter going backward through the alphabet, so after R comes P.

  6. Find the next number: 1, 1, 2, 3, 5, 8, 13, ___?

    Answer: 21

    This is the Fibonacci sequence where each term is the sum of the two preceding terms: 8 + 13 = 21.

  7. What is the missing number: 100, 91, 83, 76, 70, ___?

    Answer: 65

    The differences are −9, −8, −7, −6, −5, so the next term is 70 − 5 = 65.