In Exercises 312, show that the set is infinite by placing it in a one-to-one
Chapter 2, Problem 2.1.391(choose chapter or problem)
In Exercises 3-12, show that the set is infinite by placing it in a one-to-one correspondence with a proper subset of itself. Be sure to show the pairing of the general terms in the sets.
{30, 31, 32, 33, 34, …}
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