SSC CHSL 2018 · PYQ · Number Series · medium
Which number will replace the question mark (?) in the following series?
6, 12, 36, 144, ?
- A.520
- B.620
- C.420
- D.720✓ Correct
The series is formed by multiplying by 2, 3, 4, 5 respectively: 6×2=12, 12×3=36, 36×4=144, 144×5=720.
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