Coding and Decoding Questions

In a certain code, 329 means 'you are bad', 419 means 'bad is good' and 195 means 'nothing is bad'. ___ represents 'good'.

If 6 * 9 – 4 = 58 and 3 * 9 – 7 = 34, then in the expression A * 4 – 9 = 91, what is the value of 'A'?

If in a code language 3456 = ROPE and 15526 = APPLE then 54613 = ?

If SQUALOR is coded as USWCNQT, then how will WHY be coded as?

If '÷' stands for subtraction,'-' stands for addition,'x' stands for division and '+' stands for multiplication, then which one of the following equation is correct?

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

If 9@7=4; 6@1=10; 7@4=6; then what is the value of 8@2=?

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then 217 & 7 # 3 @ 2 % 7 = ?