Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

ab_d_ed_baa_ _de

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

Travelling

If A=1, CAT=60, then MAN=?

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

Find the missing number in the given figure?

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

A man looks at a portrait and says, " She is my Father-in-law's only grand-daughter". How is the girl in the portrait related to this man's wife?

Nurse : Ward :: Teacher : ?