8. Let d denote the discrete metric on a set X. Let (n) be a convergent sequence on (X, d). Which of the following is necessarily true? (a) (xn) is a constant sequence. (b) (rn) is not a constant sequence. (c) There exists a natural number N such that r, = rN for n 2 N. (d) There exists a natural number N such that rn # xN for n 2 N.

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8. Let d denote the discrete metric on a set X. Let (xn) be a convergent sequence on (X, d). Which
of the following is necessarily true?
(a) (rn) is a constant sequence.
(b) (xn) is not a constant sequence.
(c) There exists a natural number N such that r, = IN for n 2 N.
(d) There exists a natural number N such that xn # xN for n 2 N.
Transcribed Image Text:8. Let d denote the discrete metric on a set X. Let (xn) be a convergent sequence on (X, d). Which of the following is necessarily true? (a) (rn) is a constant sequence. (b) (xn) is not a constant sequence. (c) There exists a natural number N such that r, = IN for n 2 N. (d) There exists a natural number N such that xn # xN for n 2 N.
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