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Deductive Reasoning

Deductive Reasoning. Section 2-4. Deductive reasoning uses a rule to make a conclusion. Inductive reasoning uses examples to make a conjecture or rule. Law of Detachment. If is a true conditional and p is true, then q is true.

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Deductive Reasoning

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  1. Deductive Reasoning Section 2-4

  2. Deductive reasoning uses a rule to make a conclusion. Inductive reasoning uses examples to make a conjecture or rule.

  3. Law of Detachment If is a true conditional and p is true, then q is true. Ex. “If a coin is a penny, then it is made of copper.” • A coin is a penny. 2. It is made of copper.

  4. Law of Syllogism If and are true conditionals, then is also true. • “If it’s an apple, then it’s a fruit.” • “If it’s a fruit, then it’s good for you.” 3. “If it’s an apple, then it’s good for you.”

  5. Joke Time How do you paint a rabbit? With hare spray!

  6. What did the rabbits say when the farmer caught them in the garden? Lettuce alone!

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