📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      What will come in place of the question mark (?) in the

      following series? 50, 70, 110, 190, 310, ?
      A 655 Correct Answer Incorrect Answer
      B 457 Correct Answer Incorrect Answer
      C 772 Correct Answer Incorrect Answer
      D 510 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Differences:

      70 − 50 = 20

      110 − 70 = 40

      190 − 110 = 80

      310 − 190 = 120

      These are:

      20 = 20 × (2 − 1)

      40 = 20 × (3 − 1)

      80 = 20 × (5 − 1)

      120 = 20 × (7 − 1)

      Next prime = 11

      Next difference = 20 × (11 − 1) = 200

      Next term = 310 + 200 = 510

      Practice Next
      More Missing Series Questions

      Relevant for Exams:

      ask-question