Reasoning - Classification

Directions to solve :
In each of the following questions, four letters or letter groups have been given, out of which three are alike in some manner and the fourth one is different. Choose out the odd pair.
1.
Answer

Answer :

Option A

Explanation :


In all other groups, there is a gap of two letters between the given letters.
2.
Answer

Answer :

Option B

Explanation :


All other groups contain two consecutive letters in reverse order.
3.
Answer

Answer :

Option C

Explanation :


All other groups contain alternate letters of the alphabet in order.
4.
Answer

Answer :

Option D

Explanation :


In all other groups, first and fourth letters are consecutive and second and third letters are in reverse alphabetical order.
5.
Answer

Answer :

Option A

Explanation :


In all other groups, first, second, third and fourth letters are respectively moved one, two, three and four steps forward to obtain second, third, fourth and fifth letters respectively.
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