Let f : P(N) ► N be defined by
e f(S) = min S, the minimum value of S for S c N. Then f is
(a) one-one and onto
(b) onto but not one-one
В B.
(c) one-one but not onto
et
(d) neither one-one nor onto
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I don't no. aaaaaaaaaa a a. a a a a a a
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