Using conditional proof, show that ¬q → s can be derived from the following premises: p → (q → r), ¬r V p, q Translate the following statements into logical expressions using predicates, quantifiers, and logical connectives: (i) (ii) Not everyone is perfect. No one is perfect. (iii) (iv) (v) All your friends are perfect. Some of your friends are not perfect. At least one of your friends is perfect. Everyone is your friend and is perfect. Not everybody is your friend or someone is not perfect. (vi) (vii)

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