Verbal Reasoning - Mental Ability Questions

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

Q, N, K, H, ?

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

AZ, BY, CX, ?

If "α" denotes "subtracted from", "β" denotes "multiplied by", "θ" denotes "added to" and "δ" denotes "divided by", then 10 θ 8 β 4 δ 8 α 9 = ?

Arrange the given words in the sequence in which they occur in the dictionary.
1. Dragon
2. Draculla
3. Dormont
4. Drapery
5. Deviate

In the following question, select the related number from the given alternatives.

101 : 10201 : : 107 : ?

In the following question, select the related number from the given alternatives.
5 : 130 : : 6 : ?

In the following question, select the odd letter from the given alternatives.

In the following question, select the related number from the given alternatives.
3 : 27 : : 4 : ?