Math Is Fun Forum

harpazo65

Member

From: Brooklyn, NY

Registered: 2024-09-07

Posts: 52

Set-Builder Notation

A second way to denote a set is to use Set-builder Notation, where the set D of digits is written as D = { x | x is a digit}, is we are talking about digits.

We know the digits are single numbers 0 to 9.

Use set-builder notation to represent the set of even digits.

Let E = set of even digits.

E = {x | x is an even digit}
Is this correct?

How about E = {x | x is an even digit} = {2, 4, 6, 8}?

Which one is correct?

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Focus on the journey for there will be those who would love to see you fall.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,627

Re: Set-Builder Notation

The first is correct for set builder notation. Your second answer is the roster answer.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

harpazo65

Member

From: Brooklyn, NY

Registered: 2024-09-07

Posts: 52

Re: Set-Builder Notation

The first is correct for set builder notation. Your second answer is the roster answer.

Bob

That's exactly what I thought. I will post a few more basic set theory questions later on today.

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Focus on the journey for there will be those who would love to see you fall.