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

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#1 2013-04-19 13:18:39

mathaholic
Member
From: Earth
Registered: 2012-11-29
Posts: 3,251

Add 1, then post a letter.

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

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#2 2013-04-20 00:44:23

Nehushtan
Member
Registered: 2013-03-09
Posts: 913
Website

Re: Add 1, then post a letter.

Actually 1 is a triangular number.

2  P

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#3 2013-04-20 15:47:50

mathaholic
Member
From: Earth
Registered: 2012-11-29
Posts: 3,251

Re: Add 1, then post a letter.

Oh, yeah. Why did I forget ?

3 - P

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#4 2013-08-27 16:49:44

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

4-c

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#5 2013-08-27 22:09:35

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Add 1, then post a letter.

5 P

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#6 2013-09-27 16:45:01

mathaholic
Member
From: Earth
Registered: 2012-11-29
Posts: 3,251

Re: Add 1, then post a letter.

6 T

1 is triangular
3 " "
6 " "

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#7 2013-09-27 21:37:23

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Add 1, then post a letter.

7P

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#8 2013-09-28 12:10:41

mathaholic
Member
From: Earth
Registered: 2012-11-29
Posts: 3,251

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!

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#9 2013-09-28 12:13:20

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

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.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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