Verbal Reasoning - Mental Ability Questions

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

A truck travels 36 km North, then it turns West and travels 9 km, then it turns South and travels 50 km, then it turns to its left and travels 9 km. Where is it now with reference to its starting position?

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

SAY, TDD, UGI, VJN, ?

If "*" denotes "added to", "&" denotes "divided by", "@" denotes "multiplied by" and "%" denotes "subtracted from", then 399 & 19 @ 21 % 41 * 100 = ?

In the following question, select the related letters from the given alternatives.
AGN : IOV : : BLM : ?

Select the odd figure out of the given series.

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

8,24,12,?,18,54

In a row of students, if John , who is 16th from the left, and Johnson, who is 8th from the right, interchange their positions, John becomes 33rd from left. How many students are there in a row?