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

You are not logged in.

- Topics: Active | Unanswered

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,515

1313.

Lucky I'm not triskaidekaphobic.

"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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

That is Herman and Lily Munster's address. 1313 Mockingbird lane.

**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.**

Offline

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,515

1339.

The difference between the first and second pairs of digits of the difference between 1339 and its reverse is 13.

(9331 - 1339 = 7992, and 92 - 79 = 13)

"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

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

1352 = 2^3 + 4^3 + 4^3 + 4^3 + 4^3 + 4^3 + 8^3 + 8^3

**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.**

Offline

**Tigeree****Member**- Registered: 2005-11-19
- Posts: 13,883

Phro, if you were triskaidekaphobic you wouldn't even be on this thread.

Anywho... 1352+13=....(time to think)... 1365

People don't notice whether it's winter or summer when they're happy.

~ Anton Chekhov

Cheer up, emo kid.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

1378.000001

**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.**

Offline

**Tigeree****Member**- Registered: 2005-11-19
- Posts: 13,883

just...

1391

People don't notice whether it's winter or summer when they're happy.

~ Anton Chekhov

Cheer up, emo kid.

Offline

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,515

ONE + FOUR - ZERO + FOUR = 1404

Each letter in the puzzle stands for a different digit from 1 to 7. Find the letter values.

Hi Bobby,

What's the significance of the ".000001" after "1378"?

*Last edited by phrontister (2010-03-03 22:50:09)*

"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

Offline

**Tigeree****Member**- Registered: 2005-11-19
- Posts: 13,883

Ohh, well I guess that's why it's called puzzles and games, but on the other hand I'll let someone else do it.

1417

People don't notice whether it's winter or summer when they're happy.

~ Anton Chekhov

Cheer up, emo kid.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

Hi phrontister;

There are 23 other solutions:

New number 1430:

**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.**

Offline

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,515

Hi Bobby,

Sorry, but your answer is incorrect...it should only come from the digits 1 to 7.

You said on that other site that you use Mathematica for these. Could you post your Mathematica code of this puzzle for me to learn from? Thanks.

I used BASIC to help me construct the puzzle.

New number: 1443.

*Last edited by phrontister (2010-07-25 23:37:47)*

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

Hi phrontister;

What's the significance of the ".000001" after "1378"?

Roundoff error, just a nerd joke.

New number 1457

**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.**

Offline

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,515

Hi Bobby,

1457? Is that another roundoff error, one that rounds (way) up?

Thanks for that code, btw. Tiny! Not sure if I'll be able to make sense of it.

1469

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

I can't make any sense out of it. If you understand a piece of code you wrote 15 minutes ago then you are not doing it right. That's why they call it code.

1457 that was for Tigster. Something to unglue her.

New number:

1482

**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.**

Offline

**Tigeree****Member**- Registered: 2005-11-19
- Posts: 13,883

Tigster? That's either new or my memory's getting worse all the time. But I have no idea what you're going on about. When was I glued? Gee, I'm not that sticky. Btw, I was going to point out that roundoff error, but I was afraid you would say something condradictory.

Umm.... 1495. I'm so happy I have a Mac, and that these widgets have a calculator. Although I'll have to fix that translator...

~ Anton Chekhov

Cheer up, emo kid.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

1508 = 5^2 + 6^2 + 7^2 + 8^2 + 9^2 + 12^2 + 22^2 + 25^2

**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.**

Offline

**Tigeree****Member**- Registered: 2005-11-19
- Posts: 13,883

1508+13=1521

~ Anton Chekhov

Cheer up, emo kid.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

1534

**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.**

Offline

**Tigeree****Member**- Registered: 2005-11-19
- Posts: 13,883

1534

+13

____

1547

~ Anton Chekhov

Cheer up, emo kid.

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

1560 That's the one I wanted. A great number, sublime, extraordinary, subtle, magnificent.

**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.**

Offline

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,515

bobbym wrote:

1560 That's the one I wanted. A great number, sublime, extraordinary, subtle, magnificent.

A bit cryptic, that, but here's my take on it:

Bobby's talking - in code - about....tulips!

1560 AD: The first tulip bulb is brought from Turkey to the Netherlands (*Wikipedia*).

A great number: Scads of them at springtime in Holland, in fact.

sublime: Add lime to overly-acidic soil, just below the surface.

extraordinary: Buy 12 ordinary tulips and get one free.

subtle: Tulips generally have only the hint of an odour (*Alexander Dumas: *"I shall make experiments. With them I shall succeed in imparting scent to the tulip.")

magnificent: Right on! (see piccy)

That's the one I wanted. So you're a tulip-lover, Bobby!

I now nearly feel encouraged enough to try and crack bob farey's 'uncrackable' substitution cypher code!

New number: 1573

1573 AD is a well-renowned time in history, marking the 13th year since the first tulip bulb was brought from Turkey to the Netherlands.

Also (according to the Amsterdam Tulip Museum), during that year Pope Maximillian II sent Clusius to Vienna to direct hortus, but eventually his tulip bulbs were stolen.

*Last edited by phrontister (2010-03-09 09:07:09)*

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

1573

+ 13

-------**1586**

Wow, amazing photo from the air of the tulip farms!!

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 107,810

Hi phrontister;

That's great figuring and right on the money. That is exactly what I meant.

1599 is the difference of 4 positive squares.

1599 = 400^2 - 1^2

1599 = 68^2 - 55^2

1599 = 268^2 - 265^2

1599 = 800^2 - 799^2

**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.**

Offline

**Tigeree****Member**- Registered: 2005-11-19
- Posts: 13,883

Pretty.....

Ooh, 1599 how auspicious.

plus thirteen equals....

1612! What a great year that probably was...

~ Anton Chekhov

Cheer up, emo kid.

Offline

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,515

Tigeree wrote:

1612! What a great year that probably was...

It was! That was the year that Edward Wightman was the last person to be burned at the stake for heresy in England! (Wikipedia)

1625.

The sum of the sums of the digits of the different combinations of the numbers comprising the prime factorization of 1625 is 13.

Offline