• Reasoning Ability - Series
Question

In the following question one term in the number series is wrong. Find out the wrong term.

11,   5,   20,   12,   40,   26,   74,   54

  • A) 5
  • B) 20
  • C) 40
  • D) 26
Solution

Ans.C

The given sequence is a combination of two series :
I.   11, 20, 40, 74   and
II.   5, 12, 26, 54
The pattern in I becomes + 9, + 18, + 36, ... if 40 is replaced by 38.
So, 40 is wrong.

Ans.C

The given sequence is a combination of two series :
I.   11, 20, 40, 74   and
II.   5, 12, 26, 54
The pattern in I becomes + 9, + 18, + 36, ... if 40 is replaced by 38.
So, 40 is wrong.
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