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

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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,849
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Start with 1, then add 1, then think of what letter it belongs to.

Letters :

T - Triangular number

P - Prime number

C - Composite number

SQ - Squimintrius number

http://www.mathisfunforum.com/viewtopic.php?id=19233

OJ - Other Julianthemath number

http://www.mathisfunforum.com/viewtopic.php?id=19230

http://www.mathisfunforum.com/viewtopic.php?id=19220 *Already discovered

Example

1 N

Meaning : Nothing from the list

2 P

2 is a prime number

Okay? Start!

**1** N

"Double the fun, double the thrill, double the coolness" - Julianthewiki

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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,849
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Oh, yeah. Why did I forget ?

3 - P

"Double the fun, double the thrill, double the coolness" - Julianthewiki

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**magicschoolbus123****Member**- Registered: 2013-08-15
- Posts: 18

4-c

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,258

5 P

**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.**

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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,849
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6 T

1 is triangular

3 " "

6 " "

"Double the fun, double the thrill, double the coolness" - Julianthewiki

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,258

7P

**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.**

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**mathaholic****Member**- From: Juliania
- Registered: 2012-11-29
- Posts: 2,849
- Website

8C

8 is composite because of its factors: 1, 2, 4, 8

8 is also a vertical infinity!

"Double the fun, double the thrill, double the coolness" - Julianthewiki

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 87,258

9C and a square number too.

**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.**

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