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Aptitude Number Series Question and Answers Flashcards

6 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 6 Aptitude Number Series Question and Answers flashcards as text

  1. What is the next number in the series: 3, 6, 12, 24, 48, ___?

    Answer: 96

    Each term is multiplied by 2: 3×2=6, 6×2=12, 12×2=24, 24×2=48, 48×2=96.

  2. Find the missing number: 100, 91, 83, 76, 70, ___

    Answer: 65

    The differences are -9, -8, -7, -6, -5. Each step the subtracted amount decreases by 1. 70 - 5 = 65.

  3. What comes next: 2, 5, 10, 17, 26, ___?

    Answer: 37

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

  4. Identify the next term: 1, 1, 2, 3, 5, 8, 13, ___

    Answer: 21

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

  5. What is the missing value: 81, 27, 9, 3, ___?

    Answer: 1

    Each term is divided by 3: 81÷3=27, 27÷3=9, 9÷3=3, 3÷3=1.

  6. Find the next number: 5, 10, 20, 40, 80, ___

    Answer: 160

    Each term doubles: 5×2=10, 10×2=20, 20×2=40, 40×2=80, 80×2=160.