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  9. Q43

ibps-rrb-os1 2019 · Question 43 of 186

What should come in place of the question mark ‘?’ in the following number series? 5.5, ?, 77, 154, 1078, 2156

Number Series

  1. A17
  2. B23
  3. C11Correct
  4. D21
  5. E30

Answer: C. 11

Explanation

Pattern:

Source: IBPS RRB PO (Scale 1) Officer 2019 Mains Previous Year Paper — Answer Key & Detailed Solutions (memory-based compilation, ixamBee) · memory-based

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