The Mathematician's daughters

[lyonsd]

Two mathematicians meet in the street and start to talk.

"I heard you already have three children now."

"Yes, that's right, I have three daughters."

"How old are they?"

"Well, if you add up their years, you get 13 and if you multiply their years then you get the same number as the house number over there."

"Really! But that's yet not enough for me."

"That's right, I have to add that my eldest daughter has a dog."

"I see, now everything is clear to me."

 

[zam70]

WTF
iM sTOopid
mE aiNt geTtIn it.

 

[MissingMyBuick]

HUH??? I don't get it. Maybe I'm just too slow. Or maybe because it's Friday and I'm too excited about the weekend I'm not taking the time to really think about it. Enlighten please.

 

[lyonsd]

Originally posted by MissingMyBuick
Enlighten please.

In due time. Maybe somebody else can get it.

 

[MissingMyBuick]

Oh, Alright, I'll wait. You people better hurry and figure it out or else.....

 

[T-top87GN]

Ok I figured it out, anyone want me to post the answer??

 

[MissingMyBuick]

Please do.

 

[T-top87GN]

The ages are 2, 2, and 9.

 

[MissingMyBuick]

Wait, so was it supposed to be funny?

 

[T-top87GN]

Nope, it is a math problem, or riddle if you will.

 

[MissingMyBuick]

OK, nevermind. I thought there was some kind of hidden funny part. I guess I could have figured the math part out if I wanted.

 

[John Larkin]

So how do you know the house number is 32?

 

[68 stang]

Originally posted by John Larkin
So how do you know the house number is 32?

You mean 36?

 

[T-top87GN]

The house number is 36. 2x2=4 4x9=36

I took every combination of 3 numbers that add up to 13 and multiplied the 3 numbers to get a product.

I noticed that only 2 of the combinations came out to the same number. 2+2+9=13 and 1+6+6=13

So that's the only way the guy could have been needing more info if either one of those was right.

Then he said my "eldest daughter" which implies there is only one eldest daughter so the out of the two choics above, only the 2+2+9 combo could be right.

Make sense?

 

[John Larkin]

Yeah, 36, duh. I keep all my intelligent answers for work.

 

[ChrisCairns]

Guess I'm not too bright.

Why couldn't it be for instance 2 + 5 + 6?

 

[T-top87GN]

Originally posted by ChrisCairns
Guess I'm not too bright.

Why couldn't it be for instance 2 + 5 + 6?

Because the product of those numbers would be 60. In all the combinations of 3 numbers that add up to 13, there are only 2 combinations that produce the same number when you multiply the 3 numbers together. That would be the only way the 2nd mathematician could be confused about the "number on the house."

Does that help?

 

[John Larkin]

How do you know 36 is the correct number for the house?

 

[Pronto]

Geek humor

 

[ChrisCairns]

Originally posted by Bandit
Does that help?

No. But this does.

http://pub83.ezboard.com/fjefffsbeardboardfrm5.showMessage?topicID=28.topic