Verbal Reasoning - Mental Ability Questions

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

d_ba_c_a_cb_

Find the missing number?

Find the missing number from the given alternatives.

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

_vww_uuv_wvuu_w

If ∆○ = 52, □# = 43. What is #∆□ = ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

NI, PM, RQ, TU, VY, ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series. NIP, KGO, HEN, ECM, ?

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