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Cantor's Diagonal Argument
Recognizing a countable set
MCQ
Which of the following statements are true?
Possible answers
N
\mathbb{N}
N
and
N
∗
\mathbb{N}^*
N
∗
are equipotent
Q
\mathbb{Q}
Q
is countable
A set that is dense in
R
\mathbb{R}
R
cannot be countable
The set of algebraic numbers is countable
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