PEI Math 521A Practice Questions - Secondary Mathematics Assessment - Math 521A - Prince Edward Island Exam

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Consider the argument: 'All prime numbers greater than 2 are odd. The number 17 is odd. Therefore, 17 is a prime number.' Is this argument valid or invalid, and why?

Valid, because the conclusion that 17 is prime is mathematically true. Invalid, because it commits the fallacy of affirming the consequent. Valid, because both premises are true statement facts. Invalid, because 17 is actually an even number.

Correct Answer:

Invalid, because it commits the fallacy of affirming the consequent.

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