SSC CHSL 2022 · PYQ · Number Series · medium
Which of the following numbers will replace the question mark (?) in the given series? 19, 38, 35, ?, 135, 810
- A.142
- B.140✓ Correct
- C.146
- D.137
The pattern alternates: ×2, −3, ×4, −5, ×6... So: 19×2=38, 38−3=35, 35×4=140, 140−3=137... Actually: 19×2=38, 38−3=35, 35×4=140, 140−5=135, 135×6=810. So ? = 140.
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