Question

All of the students in Ms. Osbourne's class like pizza. Jeff is a student who likes pizza. Therefore, Jeff is a student in Ms. Osbourne's class.

Answer 1

This is a logical fallacy, as it follows the formula of A then B; B, therefore A. Another example is this: All of my friends are really nice. James is really nice, so he is my friend. I could have never met James, but if you use this logic, he has to be my friend, which is false. Hope I helped!