Coding and Decoding Questions

If 18!10 = 4, 10!4 = 3 and 4!8 = -2, then find the value of 16!18 = ?

If "$" means "added to", "@" means "divided by", "#" means "multiplied by" and "%" means "subtracted from", then

136 @ 17 # 0 $ 19 % 5 = ?

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

40 ÷ 8 x 5 + 15 - 2 = 30

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

24 + 4 - 20 ÷ 9 x 5 = 31

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

20 + 12 x 35 - 20 ÷ 10 = 31

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

12 - 16 x 25 ÷ 80 + 10 = 7

If 7Ω6 = 84, 8Ω7 = 112 and 8Ω4 = 64, then find the value of 3Ω4 = ?

If 3!5 = 30, 6!1 = 12 and 5!8 = 80, then find the value of 2!2 = ?