Coding and Decoding Questions

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

If "A" means "subtraction", "B" means "division", "C" means "addition" and "D" means "multiplication", then

305 B 5 A 28 C 43 D 12 = ?

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

16 x 4 - 10 + 10 ÷ 6 = 54

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?

30 ÷ 2 - 10 x 6 + 5 = 35

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

12 - 16 x 25 ÷ 80 + 10 = 7

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

3 + 4 - 25 ÷ 2 x 12 = 41

Which one of the following interchanges in signs and numbers would make the given equation correct?

3 + 5 - 2 = 4