A) b b a
B) a b b
C) b a b
D) b b b
Correct Answer: A
Solution :
Observe the above letter series The first blank space should be filled in by 'b' so that two a? are The second blank space should be filled in by either 'a' in which case four 'a' s are followed by two 'b' s. or it should be filled in by 'b' s. The last space must be filled in by 'a' 4. Possible answers are b a a or b b a. Since the alternatives contains only 'b a a. is the answer. In case both 'baa' and 'b b a' has appeared as possible alternatives, then we would choose one which is more prominent pattern. aabb/aaa bbb/aa would be a better choice so that the answer in that case would be b b a.
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