ok no sensible explanation given to me

@marlenevelazquez Let's say this is the first statement: M > /(/N or /O)

How do we get the contrapositive?

Why is it not: N and O > /M

In the last example, M > /(/N or /O)

it was not flipped

I believe the correct answer should be:

N and O > /M

Please explain and correct me if I'm wrong.