Verbal Reasoning - Mental Ability Questions

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

a_ ca_c_dc_d_ad_

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

In the following question, select the number which can be placed at the sign of ? from the given alternatives.

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

3, 5/3, 1/3, ? , -7/3, -11/3

In a certain code language, '-' represents 'x', '÷' represents '+', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

5 - 6 + 30 x 8 ÷ 16 = ?

Select the related word/letters/number from the given alternatives.
BCD : YXW : : FGH : : ?

If HEAR is written as KJHA, then MILK can written as

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
A, C, F, H, K, ?