Verbal Reasoning - Mental Ability Questions

If ETHANOL is coded as HWKDQRO, then how will MIX be coded as?

After interchanging + & x and 12 &18, which of the following equations will hold true?

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

Gw, Jt, Np, ?

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

5, 9, 13, 17, ?, 25

Anand is son of Prema. Rajeev is brother of Prema. Neha is daughter of Rashmi . Neha is sister of Rajeev. How is Anand related to Rashmi ?

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

B, F, K, Q, ?

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

BMY, DNW, FOU, ?

Determine the value of ? $$\begin{gathered} 1-121-131-14.........1-1n-? \\ \end{gathered}$$