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.

5, 8, 12, 17, 23, ?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

xy_kx_zk_yzk xyz_ _

Select the related word from the given alternatives.
Plane : Pilot :: Ship : ?

A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as shown in the given two matrices. The columns and rows of Matrix-I are numbered from 0 to 4 and that of Matrix-II are numbered from 5 to 9. A letter from these matrices can be represented first  by its row and next by its column ,for example 'F' can be represented by 32,42 etc and 'M' can be represented by 88,68 etc. similarly,you have to identify the set for the word ''TEST''.

From the given alternative words, select the word which can be formed using the letters of the given word:

COMMUNICATION

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

T Q N K H E B Y V S P ? ? ?

If "A" denotes "added to", "B" denotes "divided by", "C" denotes "multiplied by" and "D" denotes "subtracted from", then 87 B 3 C 4 A 4 D 50 = ?

Looking at a lady, Joey said, "She is the mother of my mother's mother-in-law's husband". How is the lady related to Joey's father?