Question: Show: (2, 7] does not have a smallest element. Show: x R, if x 2 = 1, then x = 1 Note: Both signs are

Show: (2, 7] does not have a smallest element.

Show: x R, if x2= 1, then x = 1

Note: Both signs are "not equal to" signs

Let A, B, and C be sets. Show: A C A B C.

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