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Priyanka Tomar • 35.28K Points
Coach Reasoning 

Q. One term in the number series is wrong. Find out the wrong term.
6, 15, 35, 77, 165, 221

  • (A) 35
  • (B) 77
  • (C) 165
  • (D) 15
  • Correct Answer - Option(C)
  • Views: 940
  • Filed under category Reasoning
Explanation by: Priyanka Tomar 
The terms of the series are products of two consecutive prime numbers i.e. (2 x 3),
(3 x 5), (5 x 7), (7 x 11),.....
So, 165 is wrong and must be replaced by (11 x 13) i.e. 143.

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