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.
26.
Answer

Answer :

Option C

Explanation :


No letter is repeated in any other group.
27.
Answer

Answer :

Option D

Explanation :


In all groups, there is gap of 1 letter between first and second letters, 2 letters between second and third letters, and 3 letters between third and fourth letters.
28.
Answer

Answer :

Option D

Explanation :


In all other groups, the third and second letters are 3 steps ahead of the first and third letters respectively.
29.
Answer

Answer :

Option B

Explanation :


In all other groups, vowels occur alternately.
30.
Answer

Answer :

Option A

Explanation :


All other groups begin with a vowel.
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