A letter series is given below in which some letters are missing. Select the option that gives the letters that can fill these blanks in that order. b_ba_db_bd_abdb_bdb_bd_c

bbccaba cbcbcab dbcccab dbcbcab

dbcbcab

The given series is b_ba_db_ / bd_abdb_ / bdb_bd_c On observing it closely, we can complete the series as: bdbabdbc / bdbabdbc / bdbabdbc So, dbcbcab