__First way__

__Wrong is a negative number__

Right is a positive number

1 wrong = -1

1 wrong = -1

1 wrong + 1 wrong = 2 wrongs

-1 + -1 = -2 = negative = 2 wrongs

1 right + 1 right = 2 rights

1 + 1 = 2 = positive = 2 rights

__Second way__

__Wrong is false__

Right is true

In binary false = 0

In binary true = 1

wrong + wrong = 2 wrongs

0 AND 0 = 0 = wrong

1 AND 1 = 1 = right

__Have any more ways?__

__Comment if you know any other ways of doing this!__