Verbal Reasoning - Mental Ability Questions

Find the odd word/letters/number pair from the given alternatives.
(A) ZVR
(B) ZYX
(C ) QMI
(D) IEA

In the following question, select the missing number from the given series.672, 666, 660, 654, ?

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
49, 64, ?, 100, 121

Ryaan is Vehaan's mother's sister's father's only son's son. How is Ryaan related to Vehaan?

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

CAT , DBT , ECT , ?

Teacher is related to Class in the same way Driver is related to

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

AB, BC, CD, DE, EF ?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
24 x 6 - 8 + 2 = ?