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Aptitude Test Number Sequences and Functions Questions 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 Test Number Sequences and Functions Questions and Answers flashcards as text

  1. Find the 10th term of the arithmetic sequence: 5, 8, 11, 14, ...

    Answer: 32

    a_n = a_1 + (n-1)d = 5 + (10-1)×3 = 5 + 27 = 32.

  2. If f(x) = 4x - 7 and f(a) = 17, what is the value of a?

    Answer: 6

    4a - 7 = 17. 4a = 24. a = 6.

  3. What type of sequence is: 5, 10, 20, 40, 80?

    Answer: Geometric sequence with r=2

    Each term is multiplied by 2, making this a geometric sequence with common ratio r=2.

  4. If h(x) = (x + 3)/2, what is h(11)?

    Answer: 7

    h(11) = (11 + 3)/2 = 14/2 = 7.

  5. The sum of the first 5 terms of an arithmetic sequence is 65. If the first term is 5, what is the common difference?

    Answer: 4

    S_n = n/2 × (2a + (n-1)d). 65 = 2.5 × (10 + 4d). 26 = 10 + 4d. 4d = 16. d = 4.

  6. What is the next term in the sequence: 2, 5, 11, 23, 47?

    Answer: 95

    Rule: ×2 + 1. 2×2+1=5, 5×2+1=11, 11×2+1=23, 23×2+1=47, 47×2+1=95.