1. 

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the given question 25 ÷ 2 - 10 + 10 x 6 = ?
A. 1
B. 21
C. 19
D. 20

Answer: Option A

Explanation:

Given, 25 ÷ 2 - 10 + 10 x 6

Replacing the signs,
25 x 2 ÷ 10 - 10 + 6
= 25/5 - 10 + 6
= 5 - 10 + 6 = 11 - 10 = 1