Verbal Reasoning - Mental Ability Questions

Rohan, after walking 5 km towards west, turns left and then walks for 12 km more. Find the shortest distance between his initial and final position.

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

If 2*10 = 6, 14*16 = 15 and 4*16 = 10, then find the value of 16*8 = ?

If in a certain language, STRING is coded as TSIRGN, how is RANDOM coded in that code?

If MARBLES is coded as PDUEOHV, then how will GIN be coded as?

Find the missing number?

Six persons L, M, N, O, P and Q sit in a linear row adjacent to each other facing north. Three persons sit between Q and P. N sits immediate left of Q. Two persons sit between N and M. How many persons sit to the left of M? 

Select the related word/letters/number from the given alternatives.
AEG: GKM :: MQS : ?