SOLUTION: Use Set-builder Notation to represent digits 0 to 9. Let D be a set. D = {x | x is a digit} Is this correct in terms of set theory?

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Question 1208385: Use Set-builder Notation to represent digits 0 to 9.

Let D be a set.

D = {x | x is a digit}

Is this correct in terms of set theory?


Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

I would phrase it like this
D = {x | x is an integer and 0 ≤ x ≤ 9}

Your math textbook may write it like this

The portion translates to "x is in the set of integers" i.e. "x is an integer".
Why is Z used for the set of integers? The Z stands for Zahl, which is a German word meaning "number".
More info found here
https://mathworld.wolfram.com/Z.html