Coding and Decoding Questions

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

In a certain code language, "SCENE" is written as "TBFMF". How is "TRAIN" written in that code language?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

80 x 16 ÷ 4 + 2 - 8 = ?

If REDUCE= 56, RECYCLE = 71 then REUSE=?

In a certain code language, “MAKER” is written as “PDNHU”. How is “TOOLS” written in that code language?

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 =?

In a certain code language, “TALCS” is written as “UENCV”. How is “SPARK” written in that code language?

If C is coded 3 , DASH is coded as 32 , then DANCE will be coded as