1. 

If '+' stands for division; 'x' stands for addition, '-' stands for multiplication, '÷' stands for subtraction, which of the following equation is correct?
A. 36 + 6 - 3 x 5 ÷ 3 = 24
B. 36 x 6 + 7 ÷ 2 - 6 = 20
C. 36 ÷ 6 + 3 x 5 - 3 = 40
D. 36 - 6 + 3 x 5 ÷ 3 = 74

Answer: Option D

Explanation:

On changing the signs, in option (D), we get

36 x 6 ÷ 3 + 5 - 3 = 74

 36 x 2 + 5 - 3 = 74

 72 + 5 - 3 = 74 77 - 3 = 74

74 = 74