Verbal Reasoning - Mental Ability Questions

If -2@-4 = -8, -1@-8 = -8 and -1@6 = 6, then find the value of -1@7 = ?

In the following question, from the given alternative words, select the word which can be formed using the letters of the given word.
CAPITULATE

What will come in place of the question mark (?) in the following number series?14, 18, 9, 25, 0, ?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
a _ bc _ a _ bcdabc _ da _ cd _

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

Arrange the given words in the sequence in which they occur in the dictionary.
i. Cover
ii. Clandestine
iii. Coward
iv. Cajole

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.

Herringbone

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

2, 3, 7, 16, ?