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?

m_o_mn_p_no_

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

 In a row of boys, Rahul’s position from the right end is 39th and Pankaj’s position from the left end is 53rd. After interchanging their position, Rahul’s position becomes 64th from the right end. How many boys are there in the row?

The given ven diagram represents the students who can speak different languages. According to it, the total number of students who can speak exactly two languages is ___.

Select the related word/letters/number from the given alternatives.
Opposite : Identical : : Lengthy : ?

If "A" denotes "added to", "B" denotes "divided by", "C" denotes "multiplied by" and "D" denotes "subtracted from", then 87 B 3 C 4 A 4 D 50 = ?

If '+' means '/', '/' means '­','­' means 'x', 'x' means '+', then 24+8/2­6x6=?

P started walking from North to South. She turned right at right angle and then again right at right angle. In which direction was she ultimately walking?