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Find the WRONG number in the series: 4, 6, 12, 30, 90, 316, 1260

Competition practiceNumber Series
  • A12
  • B30
  • C90
  • D316

Step-by-Step Solution

Multipliers rise 1.5, 2, 2.5, 3, 3.5, 4: after 90 comes , not 316. So 316 is wrong.
Answer: D) 316

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