Question

Determine if the argument is valid or invalid. Give a reason to justify answer.

If it is cold, then you need a coat.
You do not need a coat.
∴ It is not cold.

Answer 1

This argument is invalid because there could be multiple circumstances under which you wouldn't need a coat and yet it not be cold, such as if a friend was bringing a coat for you. Also, if it was raining, and yet not cold, you would need a coat but it wouldn't be cold outside.

Answer 2

I dont remeber right but I think it is valid but not 'sound'

Answer 3

it is valid