Question: 1.1 Use the direct proof method shown in class to show following proposition: if alb and blc then alc 1.2 Use Proof by Contradiction to

1.1 Use the direct proof method shown in class to show

1.1 Use the direct proof method shown in class to show following proposition: if alb and blc then alc 1.2 Use Proof by Contradiction to show Suppose that n 1 pieces of mail are delivered to n mailboxes. Then some mailbox contains at least two pieces of mail

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