Question

Which of the following does not represent the set of integers from 1 to 9?

{integers from 1 to 9}

{1, 2, 3, 4, 5, 6, 7, 8, 9}

{1, 2, 3, …, 7, 8, 9}

{integers greater than 1}

Answer 1

last one does not.

Answer 2

Last one, because it includes integers greater than 9, like 10, 11, and so forth until infinity.