Question

Asked Jan 21, 2020

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Rewrite the statements in if-then form in two ways, one of which is the contrapositive of the other. Use the formal definition of “only if.”

Sam will be allowed on Signe’s racing boat only if he is an expert sailor.

Step 1

Suppose, we have a statement p that implies statement q. This would mean p is sufficient for q and q is necessary for p to happen. Contrapositively, if q is not true then p will also not be true.

Here, Sam will be allowed on Signe’s racing boat only if he is an expert sailor. Thus, being an expert sailor is nec...

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