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WBCS Preliminary Examination 2016 — General Studies · Question 165 of 200

Q165
ArithmeticNumber Series & Progressions
The next term in the sequence 4, 10, 22, 46, ____ is
  1. a.66.
  2. b.76.
  3. c.56.
  4. d.94.

Answer: (D) 94.

Each term = previous term × 2 + 2: $4×2+2=10$, $10×2+2=22$, $22×2+2=46$, $46×2+2=94$.

Q164 Whole paperQ166