Question : Direction: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
ab _ babc _ ab _ b _ bcb _ b
Option 1: c b c a a
Option 2: c a b a c
Option 3: a b c b a
Option 4: a c a c a
Correct Answer: c b c a a
Solution : Given:
ab _ babc _ ab _ b _ bcb _ b
Let's check the given options –
First option: c b c a a
The series becomes ab c babc b ab c b a bcb a b
The pattern in the series becomes ab c b /abc b / ab c b / a bcb / a b
Second option: c a b a c
The series becomes ab c babc a ab b b a bcb c b
There is no pattern in the above series.
Third option: a b c b a
The series becomes ab a babc b ab c b b bcb a b
There is no pattern in the above series.
Fourth option: a c a c a
The series becomes ab a babc c ab a b c bcb a b
There is no pattern in the above series.
Hence, the first option is correct.
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