Question: 1. Let n be a positive integer and let R = {a1, a2, a3, . .., an } be a nonempty set where a; are

1. Let n be a positive integer and let R = {a1, a2, a3, . .., an } be a nonempty set where a; are real numbers for i = 1, 2, ...n. Prove that R has an upper bound. As well, find the least upper bound of R

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