Consider two sets, A = {1, 2, 3, ..., 100} and B = {3, 5, 7, 9, ... , 201}. Prove that |A| = |B| by first finding a bijection f : A→B, and proving that f both an injection and a surjection.

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A: Introduction: The supremum and infimum properties are the very important properties of any subset of…

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A: The answer is given as follows:

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Q: I need help for number 7. Thanks!

A: (a)Let

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