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?

A_C_E_B_DE

If 'how are you' is written as 'ne ki se' and 'where are you' as 'ne bl se' and 'you were here' as 'ke ne jo', then 'how you here' is written as

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

Arrange the given words in the sequence in which they occur in the dictionary.
i. nature
ii. nest
iii. numeric
iv. news

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

hello, lower, error, organ, tense, ?

If north-­west becomes south, north­-east becomes west and so on, then east will become which direction?

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

If "*" denotes "added to", "&" denotes "divided by", "@" denotes "multiplied by" and "%" denotes "subtracted from", then 135 & 15 @ 10 % 3 * 6 = ?