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Diagramming Practice – Milkshakes

Diagram the following conditional statement and find its contrapositive: “Chocolate is the only good flavor for a milkshake.”


The diagramming keyword here is “the only.”  “The only” is a bit tricky to diagram.  “Only” by itself indicates a necessary condition.  However, “the only” indicates a sufficient condition.  Thus, “good flavor for a milkshake” is sufficient.  That means “chocolate” is necessary.

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