6 6 8 5 5 3 7 3 7 2 5 9 8 7 8 1 5 5 4

Using the above sequence find the term that does NOT belong to the group.

83, 35, 27, 81

This question was previously asked in
RRC Group D Previous Paper 11 (Held On: 3 Oct 2018 Shift 1)
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  1. 27
  2. 83
  3. 81
  4. 35

Answer (Detailed Solution Below)

Option 1 : 27
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Detailed Solution

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Second element in every pair is third to the right of first element except 27.

6 6 8 5 5 3 7 3 7 2 5 9 8 7 8 1 5 5 4

There is a gap of two digits in every number like, there are 5 and 5 between 8 and 3 in 83.

Similarly, there are 7 and 2 between 3 and 5 in 35 and 7 and 8 between 8 and 1 in 81. But there are 5, 8, 8, and 7 between 2 and 7 in 27.

Hence, 27 does not belong to the group.

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