Topic 3: Conditional And Formal Logic

Lesson 3.2: Contrapositives And Valid Inference — Quiz

Test your understanding of lesson 3.2: contrapositives and valid inference with 5 practice questions.

Practice Questions

Question 1

What is the contrapositive of the conditional statement 'If it rains, then the ground is wet'?

Question 2

Which of the following statements represents an invalid inference from the conditional statement 'If A, then B'?

Question 3

What is true about the contrapositive of a statement?

Question 4

Choose the statement that represents denying the antecedent: 'If P, then Q'?

Question 5

If we know that 'If it is a cat, then it is a mammal' is true, what can we infer if we observe an animal that is not a cat?