Coding and Decoding Questions

If 9&4 = 50, 3&7 = -40 and 7&5 = 20, then find the value of 4&5 = ?

If A means '+', @ means 'x', & means '/' and V means '-', then the value of

7 @ 2 V 135 & 5 @ 3 & 9 A 1

If x means -, / stands for +, + stands for /, and - stands for x, which of the following gives 125 - 50 / 10 + 20 x 4 ?

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then

132 & 3 # 10 @ 20 % 2 = ?

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

18 ÷ 2 - 25 x 9 + 6 = 38

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

18 x 12 - 6 ÷ 5 + 4 = 35

If "A" means "minus", "B" means "divided by", "C" means "plus" and "D" means "multiplied by", then

54 B 6 A 4 C 2 D 5 = ?

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

1 ÷ 14 x 30 + 20 - 10 = 12