Which on set of letter complete the given series ?
_bc_ca_aba_c_ca

Select the combination of letters that when sequentially placed in the gaps of the given letters series will complete the series.
b_bab_bc_abbb_ba_b

380, 645, 557, 656, 762, 875, ?

Select the correct option to replace question mark.
242, 343, 444, 545, ? 

In the following question , a series is given with one terms missing . Choose the correct alternative from the given ones that will complete the series :

96, 109, 134, 175, ?

What will come in place of question (?) mark in the following series?
CD     FG     JK     ?        UV

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_qr_srq_p_rs_r_p

In the following questions complete the number series :
204, 100, 48, 22, ___