Coding and Decoding Questions

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "­" means "multiplied by", then 240 x 12 – 6 + 29 ÷ 42 = ?

If I=9 and SLIP=56, then FALL= ?

If CHANTED is coded as ZEXKQBA, then how will MAY be coded as?

If SWEET is written as XAHGU, then HORSE is

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

In a certain language, if PLATE is written as CYNGR, then SHOCK will be written as

If 8*2 = 3, 14*18 = -2 and 18*2 = 8, then find the value of 14*10 = ?

If 16α1 = 8, 14α6 = 42 and 12α5 = 30, then find the value of 2α6 = ?