Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.
d_cd_c_ac_bcd_cd_c
Answer & explanation
Correct answer: option 1
After dividing in three groups of six each we get d_cd_c / _ac_bc / d_cd_c. After comparing different positions we get as a pattern.
dacdbc / dacdbc / dacdbc
So the group having letters abddab will be used.