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

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#1476 2012-05-05 02:21:46

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,522

Re: Add 13 more and post it forever.

19201

(2+1)!+9-1-0!


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#1477 2012-05-05 05:05:39

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19214

1+9+1+4-2 = 13


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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#1478 2012-07-04 04:43:14

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,562

Re: Add 13 more and post it forever.

19227

check 13-divisibility by long division in head: 19 is 1R6 62is4R10 102is7R11 117is9R0, Ouais, Yup.


igloo myrtilles fourmis

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#1479 2012-07-04 04:57:06

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,522

Re: Add 13 more and post it forever.

19240

9+4-2^0+1=13


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#1480 2012-07-04 05:02:19

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,562

Re: Add 13 more and post it forever.

19253

13DIVcheck: 19is1R6 62is4R10 105is8R1 13is1R0...(next number will divide ending in 2R0 i guess)


igloo myrtilles fourmis

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#1481 2012-07-04 05:18:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19266


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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#1482 2012-11-18 13:42:28

mathgogocart
Member
Registered: 2012-04-29
Posts: 1,426

Re: Add 13 more and post it forever.

19279
yay~
makes me think of the Distant Future :]


Hey.

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#1483 2012-11-18 13:43:57

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19292


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.

Online

#1484 2012-11-18 15:02:12

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,522

Re: Add 13 more and post it forever.

19305

3*0+9+5-1


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#1485 2012-11-18 15:05:26

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19318

19 + 3 - 1 - 8 = 13


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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#1486 2012-11-18 15:08:25

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,522

Re: Add 13 more and post it forever.

19331

(3*9-1)/(3-1)


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#1487 2012-11-18 15:11:12

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19344


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.

Online

#1488 2012-11-19 01:59:03

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,847

Re: Add 13 more and post it forever.

Hi!

We got off the track somewhere with this (it happens): the number we're working on should equal post# x 13.

quittyqat will have us on toast if we don't set this right, so I'll do 19344 again:

19344

Last edited by phrontister (2012-11-19 01:59:28)


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#1489 2012-11-19 04:01:20

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19357


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.

Online

#1490 2012-11-19 14:11:10

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,847

Re: Add 13 more and post it forever.

19370

Last edited by phrontister (2012-11-19 15:35:14)


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#1491 2012-11-19 14:53:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.


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.

Online

#1492 2012-11-19 15:37:09

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,847

Re: Add 13 more and post it forever.

19396


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#1493 2012-11-19 15:56:46

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19409


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.

Online

#1494 2012-11-19 16:33:50

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,847

Re: Add 13 more and post it forever.

19422


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#1495 2012-11-19 16:48:43

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19435


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.

Online

#1496 2012-11-19 16:51:03

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,847

Re: Add 13 more and post it forever.

19448


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#1497 2012-11-19 17:58:17

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19461


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.

Online

#1498 2012-11-19 18:22:40

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,847

Re: Add 13 more and post it forever.

19474


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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#1499 2012-11-19 18:31:36

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,387

Re: Add 13 more and post it forever.

19487


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.

Online

#1500 2012-11-19 18:39:13

phrontister
Real Member
From: The Land of Tomorrow
Registered: 2009-07-12
Posts: 3,847

Re: Add 13 more and post it forever.

19500


"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

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