Math CentralQuandaries & Queries


Question from Ron, a student:

The question asked in a handout:

8k - 5 < 35, keI

I believe the answer to k is 5. But what does the k e(E) I mean in this?

Hi Ron,

The letter $I$ stands for the set of integers and the statement $k \epsilon I$ means that $k$ is a member of the set $I$. In other words $k \epsilon I$ means that $k$ is an integer. $\epsilon$ is the Greek letter epsilon.


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