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

If RESEARCH is $#!#%$&@ then SCARE is

If 12@18 = -3, 18@6 = 6 and 16@8 = 4, then find the value of 6@10 = ?

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

10 + 14 x 20 - 7 ÷ 10 = 40

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

18 x 12 ÷ 5 - 10 + 10 = ?

In a certain code language, “NOTES” is written as “141520519” and “MAKAR” is written as “13111118”. How is “LOFTS” written in that code language?

If Q = 10 and FAX = 50, then XEROX = ?

If 60#40 = 10, 40#20 = 6 and 60#90 = 15, then find the value of 40#30 = ?

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

8 ÷ 2 - 50 x 6 + 16 = 50