The answer to exercises marked [BB] can be found in the Back of the Book.
Find a one-to-one correspondence between each of the following pairs of sets:
(a) {x, y, {a,b,c}}and {14, −3, t}
(b) 2Z and 17Z
(c) [BB] N × N and {a +bi ∈ C |a,b ∈ N}
(d) N and m ∈ N, n = 1, 2}
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