Question

To get an A in Mr. Polowski’s biology class, you need a grade of at least 90%.
Claudia received an A in Mr. Polowski’s class last semester.
Conjecture: Claudia got at least 90% in the class.

Use deductive reasoning to verify the conjecture, or provide a counterexample if the conjecture is false.

A.
true; law of detachment
B.
true; law of syllogism
C.
false; not all students who get an A in the class had a grade of at least 90%
D.
false; not all students who get a grade of 90% receive an A in the class

Answer 1

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