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Home Logical Reasoning Number Series Comments

  • Question
  • Look at this series: 4, 7, 25, 10, __, 20, 16, 19, ... What number should fill the blank?


  • Options
  • A. 13
  • B. 15
  • C. 20
  • D. 28

  • Correct Answer
  • 13 

    Explanation
    Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.

  • Number Series problems


    Search Results


    • 1. Look at this series: J14, L16, __, P20, R22, ... What number should fill the blank?

    • Options
    • A. S24
    • B. N18
    • C. M18
    • D. T24
    • Discuss
    • 2. Look at this series: 72, 76, 73, 77, 74, __, 75, ... What number should fill the blank?

    • Options
    • A. 70
    • B. 71
    • C. 75
    • D. 78
    • Discuss
    • 3. Look at this series: 15, __, 27, 27, 39, 39, ... What number should fill the blank?

    • Options
    • A. 51
    • B. 39
    • C. 23
    • D. 15
    • Discuss
    • 4. Look at this series: 83, 73, 93, 63, __, 93, 43, ... What number should fill the blank?

    • Options
    • A. 33
    • B. 53
    • C. 73
    • D. 93
    • Discuss
    • 5. Look at this series: (1/9), (1/3), 1, ____ , 9, ... What number should fill the blank?

    • Options
    • A. (2/3)
    • B. 3
    • C. 6
    • D. 27
    • Discuss
    • 6. Look at this series: XXIV, XX, __, XII, VIII, ... What number should fill the blank?

    • Options
    • A. XXII
    • B. XIII
    • C. XVI
    • D. IV
    • Discuss
    • 7. Look at this series: 0.15, 0.3, ____, 1.2, 2.4, ... What number should fill the blank?

    • Options
    • A. 4.8
    • B. 0.006
    • C. 0.6
    • D. 0.9
    • Discuss
    • 8. Look at this series: U32, V29, __, X23, Y20, ... What number should fill the blank?

    • Options
    • A. W26
    • B. W17
    • C. Z17
    • D. Z26
    • Discuss
    • 9. Which word does NOT belong with the others?

    • Options
    • A. wing
    • B. fin
    • C. beak
    • D. rudder
    • Discuss
    • 10. Which word does NOT belong with the others?

    • Options
    • A. core
    • B. seeds
    • C. pulp
    • D. slice
    • Discuss


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