Coding and Decoding Questions

If 4!4 = 4, 14!2 = 8 and 10!18 = 14, then find the value of 2!6 = ?

If 70*10 = -7, 50*5 = -10 and 10*5 = -2, then find the value of 80*1 = ?

Which of the following terms follows the trend of the given list? XYXYXYxy, XYXYXyxY, XYXYxyXY, XYXyxYXY, XYxyXYXY, _______________.

If A = 1, E = 5, then HEAR = ?

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then 505 & 5 # 4 @ 20 % 5 = ?

If 45 % 11 = 7, 59 % 34 = 7 then what is the value of 55 % 4 = ?

In the following question, by using which mathematical operators will the expression become correct?
27 ? 9 ? 18 ? 24 ? 12

If '­' means 'x' , 'x' means '+' , '+' means '÷' and '÷' means '­' , then what will be the value of 40 x 12 + 3 ­ 6 ÷ 60 = ?