Valid and Invalid Inferences

Question 1

When you satisfy the sufficient condition

Answer 1

You infer the necessary condition

Question 2

When you negate the necessary condition

Answer 2

You infer the negation of the sufficient condition (contrapositive)

Question 3

When you negate the sufficient condition

Answer 3

There is no inference

Question 4

When you satisfy the necessary condition

Answer 4

There is no inference