Verbal Reasoning - Mental Ability Questions

Select the missing number?

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

PRQ, UWV, ZBA, ? , JLK

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Components

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
642 x 6 ÷ 25 + 4 = ?

In the following question, select the odd word pair from the given alternatives.

If 879= 8, 625= 1, 586= 9, then 785 = ?

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

FI, KM, PQ, ?

In the following series, one letter is missing as shown by the ?. Select the missing letter from the given options.

N, L, J, H, ?