Coding and Decoding Questions

In a certain code language, "DURING" is written as "GRUFQD". How is "PICKED" written in that code language?

If 8 θ 12 δ 6 = 60 and 13 θ 15 δ 11 = 74, then 18 θ 21 δ 15 = ?

If '+' means 'x' , '­' means '÷' , 'x' means '­' and '÷' means '+' , then what will be the value of 16 ÷ 4 x 10 ­ 5 + 8 = ?

In a certain code language, "BISLERI" is written as "IREBISL". How is "PANTHER" written in that code language?

If TABLE is written as 84973 and CHAIR is written as 51462, then how is TEACHER coded?

If 29$14 = 6, 37$25 = 3 then what is the value of 84$62 = ?

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 126 x 14 + 7 - 3 ÷ 2 = ?

If a = x, b = / and c = +, find the value of 7a5c1b6