Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,535

Also just finished Set-Builder Notation

Please to pick holes in page.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 86,366

Hi MathsisFun;

Near the bottom:

But how would you list all the Real Numbers between 2 and 6 ?

Does between include the endpoints ? As you have written here:

maybe this is correct:

What do you think?

*Last edited by bobbym (2009-09-15 13:59:01)*

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

Offline

**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,535

Hmmm ... I was extending the concept of {2, 3, 4, 5, 6} so I may just reword it.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 86,366

Hi Maths;

Maybe saying, between 2 and 6 inclusive, might clear any ambiguity. Just a thought.

*Last edited by bobbym (2009-09-15 14:16:56)*

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

Offline