Coding and Decoding Questions

If in a certain language TEACHER is coded as QBXZEBO, then how is STUDENT coded in the same language?

If 4 * 2 = 3 and 8 * 4 = 3 , then 21 * 7 = ?

If 11$25 = 18, 12$20 = 16 then what is the value of 4$50 = ?

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 x means +, + means ÷, − means x and ÷ means −, then 8x7−8+40÷2 = ?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M"denotes "added to" and "L" denotes "divided by", then

96 L 12 S 7 V 49 M 10 =?

If 'x' means addition, '­' means division, '÷' means subtraction and '+' means multiplication, then which of the equations is correct?

If 23$35 = 13, 3$5 = 8 then what is the value of 4$13 = ?