Coding and Decoding Questions

If green means red, red means yellow, yellow means blue, blue means orange and orange means green, what is the colour of clean sky ?

In a certain code language, 'it is dark outside' is written as 'ha no ti ju','is it still raining' is written as 'pa ha da no', 'go and play outside' is written as 'su ju ye la'. How is 'dark' written in that code language?

In a certain code language, "CASIO" is written as "3119915". How is "CITIZEN" written in that code language?

If train is called bus, bus is called tractor, tractor is called car, car is called scooter, scooter is called bicycle, bicycle is called moped, which is used to plough a field ?

If A=C , B= D , C = E and so on, code the following:-

‘STUDENT’

Replace # sign with the mathematical operators '+', '/','-'or'=' to get a balanced equation out of 186 # 31 # 36 # 30.

If E = 5 and READ is coded as 7, then what is the code of 'DEAR' ?

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

10 + 14 x 20 - 7 ÷ 10 = 40