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Number and Letter Sequences Flashcards

7 cards from real GCAT 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 and Letter Sequences flashcards as text

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

    Answer: 96

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

  2. Which letter comes next? D, G, J, M, ___

    Answer: P

    Each letter advances by 3 positions in the alphabet, so M + 3 = P.

  3. What is the missing number? 100, 91, 82, 73, ___, 55

    Answer: 64

    The sequence decreases by 9 each time, so 73 − 9 = 64.

  4. Which completes the sequence? Z, X, V, T, ___

    Answer: R

    Each letter moves back 2 positions in the alphabet, so T − 2 = R.

  5. What is the next number? 1, 4, 9, 16, 25, ___

    Answer: 36

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

  6. Find the next pair: AB, DE, GH, JK, ___

    Answer: MN

    Each pair starts 3 letters after the previous pair's start, so after JK comes MN.

  7. What number continues the pattern? 2, 3, 5, 8, 13, 21, ___

    Answer: 34

    Each term is the sum of the two preceding terms (Fibonacci), so 13 + 21 = 34.