Coding and Decoding Questions

If 30Ω6 = -5, 80Ω2 = -40 and 20Ω4 = -5, then find the value of 70Ω2 = ?

In a certain code, 'book is big' is written as 756; 'big is story' is 764 and 'story book is interesting' is 4356. Which digit represents 'interesting'?

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

12 x 6 ÷ 5 + 4 = ?

If '+' means '÷', '−' means '×' , '÷' means '+' and '×' means '−' , then 36×12+4÷6+2−3= ?

RHYTHM is related to MUSIC in the same way as DESIGN is related to

In a certain code language, “RAPID” is written as “GLSDU”. How is “WATER” 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?

825 x 25 - 27 ÷ 10 = ?

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

18 + 2 x 30 ÷ 6 - 4 = ?