SOLUTION: The cardinal number of ​{​xlx=x+5 and x∈N} is

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Question 1204028: The cardinal number of ​{​xlx=x+5 and x∈N} is
Found 2 solutions by greenestamps, ikleyn:
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


If I read your notation correctly, the set is the set of integers x for which the equation x=x+5 is true. Since there are no such integers x, the set is the empty set, and the cardinal number of an empty set is 0.

ANSWER: 0

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

. . . is 0 (zero).

This set of x's is empty.