If GOLD is coded as HOME, COME is coded as DONE and CORD is coded as CODE, How SONS will be coded in a certain language?

If ’’624739854’’ 1 is added to all the even number and 1 is subtract from all the odd number, then what is the sum of the digits which is fifth from the left end and fourth from the right end?

If “P” denotes “divided by”, “R” denotes “added to”, “S” denotes “subtracted from” and “Q” denotes “multiplied by”, then
48 P 4 R 3 Q 4 S 6 Q 4 = ?

Rinky walked 70 m towards the east from her house, and then took a right turn and walked 50 m to reach the post office. From there, she took a right turn again and walked 150m to reach the market, from where she took a left turn and walked a few meters to reach the school. If the air distance between Rinky's house and the school is 170 m. what is the air distance between the market and the school ?

Mr X starts to walk 3 km towards East then he turns to his right and walks 4 km. Again he starts to walk 5 km towards East after that he turns to his left and walks 6 km. Finally he turns towards West and walks 8 km.If Mr X walked towards North from his starting point then, how much he covered the distance to reach the last point?

In the following figure, square represents doctors, triangle represents artists, circle represents weight-lifters and rectangle represents Russians. Which set of letters represents Russians who are not doctors?

If DIG is coded as 25 and CUT is coded as 49 , then how will KICK be coded as ? 

In each of the following questions, find the missing letters in the given letters.
AMV ,   FQX, KUZ , _?_