Practice Test GeeksEIAT - Elevator Industry Aptitude Test Practice Test
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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 is the next number in the series: 3, 9, 27, 81, ___?

    Answer: 243

    Each term is multiplied by 3, so 81 × 3 = 243.

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

    Answer: 65

    The differences are −9, −8, −7, −6, −5, so 70 − 5 = 65.

  3. What comes next in the pattern: 2, 6, 12, 20, 30, ___?

    Answer: 42

    The differences are 4, 6, 8, 10, 12, so 30 + 12 = 42.

  4. An elevator makes trips between floors at intervals of 4, 8, 16, 32 seconds. What is the next interval?

    Answer: 64

    Each interval doubles, so 32 × 2 = 64 seconds.

  5. What is the missing value: 5, 10, 20, ___, 80, 160?

    Answer: 40

    Each term doubles, so 20 × 2 = 40.

  6. Which number continues the series: 1, 4, 9, 16, 25, ___?

    Answer: 36

    These are perfect squares (1², 2², 3², …), and 6² = 36.

  7. A cable tension reading follows: 500, 490, 470, 440, 400, ___. What is next?

    Answer: 350

    The differences decrease by 10 each time (−10, −20, −30, −40, −50), so 400 − 50 = 350.