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.

8,21,60,177,?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
PON, LKJ, GFE, ?

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

If "*" denotes "added to", "&" denotes "divided by", "@" denotes "multiplied by" and "%" denotes "subtracted from", then 136 & 8 @ 7 % 3 * 7 = ?

If "A" denotes "added to", "C" denotes "divided by", "D" denotes "multiplied by" and "B" denotes "subtracted from", then
81 C 9 D 11 B 4 A 6 = ?

A is taller than B, who is shorter than C, but taller than D. Who is the shortest?

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

15, 32, 99, 400, ?

Karan travels 20 km towards the south, and then takes a left, and travels 35 km further. Again, he takes a left and travels 20 km further. How far is he from his original position?