Verbal Reasoning - Mental Ability Questions

From the given words, select the word which cannot be formed using the letters of the given word.
FAMISHED

If "*" denotes "added to", "&" denotes "divided by", "@" denotes "multiplied by" and "%" denotes "subtracted from", then 399 & 19 @ 21 % 41 * 100 = ?

Select the related word/letters/numbers from the given alternatives:
3 : 243 :: 5 : ?

Find out the odd word/letters/number/number 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.

(3, 5), (5, 7) ( ? ), (11, 13)

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

8,21,60,177,?

After interchanging + & x and 12 &18, which of the following equations will hold true?

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

206, 309, 412, ?, 618, 721