Instructions

In each of the following questions, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?

Question 155

a_ _b abba_abb a_ba

Solution

On putting the option A letters sequentially in the gaps the given series becomes
aabbabbaaabbabba
Thus follows the pattern
aa,bb,ab,ba,aa,bb,ab,ba
So option A is correct


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