The following is a valid argument: Jim is at least sixty. Jan is younger than Jim. So Jan must be younger than sixty.

Name: The following is a valid argument: Jim is at least sixty. Jan is younger than Jim. So Jan must be younger than sixty.
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Question

Quizplus · Accepted Answer

The argument is invalid because it assumes that being younger than Jim necessarily means being younger than sixty, without considering that Jim could be exactly sixty or older, making it possible for Jan to be younger than Jim but still sixty or younger.

The Following Is a Valid Argument: Jim Is at Least