Verbal Reasoning - Mental Ability Questions

In each of the following questions, four words have been given out of which three are alike in some manner, while the fourth one is different. Choose the word which is different from the rest.

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

12 x 6 ÷ 5 + 4 = ?

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.

7, 49, 343, ?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then 36 L 9 S 8 V 7 M 5 = ?

Arrange the given words in the sequence in which they occur in the dictionary.
1. Exacts
2. Exotic
3. Exactly
4. Exacerbate
5. Exhaust

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

If 18α12 = 3, 2α14 = -6 and 4α4 = 0, then find the value of 2α16 = ?