Select the combination of letters that, when sequentially placed in the blanks of the given series, will complete the series.
_cb_a_b_a_b_ _c_d
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. adcdcdab.
Option 2: a c b d a c b d a c b d a c b d
The pattern a c b d / a c b d / a c b d / a c b d is followed.