Verbal Reasoning - Mental Ability Questions

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

Find out the missing number on the basis of a certain trend.

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
2, 10, 30, 68, ?

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

LMA, NOB, PQC, ? , STE

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

825 x 25 - 27 ÷ 10 = ?

MATHEMATICS is related to NUMBERS in the same way HISTORY is related to

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

64, 100, 169, 289, ?

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

Recalcitrant