Coding and Decoding Questions

Some equations are solved on the basis of certain system. Find out the correct answer for unsolved equation on that basis: 4 x 5 x 8 = 584, 7 x 3 x 9 = 397, 9 x 7 x 3 = ?

If UNCOVER is coded as FMXLEVI, then how will TIP be coded as?

If "A" denotes "added to", "C" denotes "divided by", "D" denotes "multiplied by" and "B" denotes "subtracted from", then 72 C 9 D 2 B 6 A 10 = ?

If REGAINS is coded as QDFZHMR, then how will PRY be coded as?

If 92 A 42 B 32 = 56 and 72 A 22 B 12 = 44, then 112 A 52 B 72 = ?

In a certain code language, "DESIRE" is written as "EGVMWK". How is "RECESS" written in that code language?

In a certain code language, "OCEAN" is written as "PEHES". How is "RIVER" written in that code language?

If IMPLORE is coded as GKNJMPC, then how will HUB be coded as?