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

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## #1 2013-04-20 11:18:39

mathaholic
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### Add 1, then post a letter.

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

Example
1 N
Meaning : Nothing from the list
2 P
2 is a prime number

Okay? Start!

1 N

246 pages on Prime Numbers Wiki (+1)

## #2 2013-04-20 22:44:23

Nehushtan
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### Re: Add 1, then post a letter.

Actually 1 is a triangular number.

2 – P

## #3 2013-04-21 13:47:50

mathaholic
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### Re: Add 1, then post a letter.

Oh, yeah. Why did I forget ?

3 - P

246 pages on Prime Numbers Wiki (+1)

## #4 2013-08-28 14:49:44

magicschoolbus123
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4-c

## #5 2013-08-28 20:09:35

bobbym

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### Re: Add 1, then post a letter.

5 P

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #6 2013-09-28 14:45:01

mathaholic
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### Re: Add 1, then post a letter.

6 T

1 is triangular
3 " "
6 " "

246 pages on Prime Numbers Wiki (+1)

## #7 2013-09-28 19:37:23

bobbym

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### Re: Add 1, then post a letter.

7P

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #8 2013-09-29 10:10:41

mathaholic
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### Re: Add 1, then post a letter.

8C

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

8 is also a vertical infinity!

246 pages on Prime Numbers Wiki (+1)

## #9 2013-09-29 10:13:20

bobbym

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### Re: Add 1, then post a letter.

9C and a square number too.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.