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Write the propositional logic equivalents for the following natural language sentences. Indicate the propositions clearly. a) A mushroom is poisonous only if it is purple.

Write the propositional logic equivalents for the following natural language sentences. Indicate the propositions clearly.

a) A mushroom is poisonous only if it is purple.

b) A mushroom is poisonous if and only if it is purple.

c) A mushroom is not poisonous unless it is purple.

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