Verbal Reasoning - Mental Ability Questions

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

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

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

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

ABC, ZYX, DEF, WVU, ?

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

0, 4, 18, 48, 100, 180, ?

If "-" means "plus", "x" means "divided by", "÷" means "multiply" and "+" means "substraction", then

If 'whom' means 'x', 'she' means '/', 'will' means '+' and 'come' means '-', then what will the value of ' 8 when 12 will 16 she 2 come 10'?

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

SQ, R, XV, W, IK, ?