Verbal Reasoning - Mental Ability Questions

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

Recalcitrant

Arrange the given words in the sequence in which they occur in the dictionary.
i.Attribute
ii. Attenuation
iii. Attain
iv. Attention

CAT : MOUSE as SNAKE : 

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then
96 L 8 S 4 V 16 M 9 =?

Select the odd word/letters/number/number pair from the given alternatives.

If (3)2 @ 1 * 7 = 98 and (4)2 @ 2 * 16 = 178, then (5)2 @ 3 * 9 = ?

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

8, 15, 28, 53, ?

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

-7/4, -1, -0.25, ? , 5/4, 2