Prostuti360°Prostuti360°
Log in

WBCS Preliminary Examination 2020 — General Studies · Question 164 of 200

Q164
ArithmeticNumber Series & Progressions
What comes next in the sequence 1, 3, 7, 15, 31, 63, ___?
  1. a.127
  2. b.125
  3. c.121
  4. d.129

Answer: (A) 127

Each term follows the pattern (previous term × 2) + 1, so 63 × 2 + 1 = 127.

Q163 Whole paperQ165