Coding and Decoding Questions

In a certain code language, "SPARROW" is written as "1326654", and "RING" is written as "6978". How is "RAINS" written in that code language?

In a certain code language, "RAINBOW" is written as "1987645" and "SNAP" is written as "3790". How is "PIANO" written in that code language?

In a certain code language, "NIGHT" is written as "ODDGM" and "DARK" is written as "GOYC". How is "GREEN" written in that code language?

In a certain code language, "MATERIAL" is written as "RIALMATE". How is "REMEMBER" written in that code language?

Which of the following interchanges in signs will make the given equation correct?
17- 15 x 5 = 250

If ENCRYPT is coded as VMXIBKG, then how will ARC be coded as?

If 17@1=8; 9@1=4; 6@4=1; then what is the value of 8@2=?

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

2 - 12 + 10 x 5 ÷ 12 = ?