Verbal Reasoning - Mental Ability Questions

Select the related word/letters/number from the given alternatives.
DB: IC:: YE: ?

In the following question, select the related number from the given alternatives.
56 : 41 : : 94 : ?

Two workers X and Y start walking from the same place. X walks 65 m West, then turns left and walks 25 m. In the meanwhile Y walks 20 m North, then turns to his right and walks 35 m , then turns South and walks 45 m. Where is Y with respect to X?

In the following question, select the missing number from the given series.
19, 38, ?, 228, 684, 1368

In the following question, select the related letters from the given alternatives.
FS : LY : : IV : ?

If "A" denotes "added to", "B" denotes "divided by", "C" denotes "multiplied by" and "D" denotes "subtracted from", then 116 B 29 C 6 A 24 D 45 = ?

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

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

111, 107.5, 104, ? , 97, 93.5