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Convert (and simplify) the following sentences to Conjunctive Normal Form (CNF): 2.1. (P →Q) → ((Q...

Convert (and simplify) the following sentences to Conjunctive Normal Form (CNF):

2.1. (P →Q) → ((Q → R) → (P → R))

2.2. (P → Q) ↔ (P → R)

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