Professor's Lab

  • Thread starter Casey
  • Start date
  • #26
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Maybe Casey lied because he thought you just guessed.
 
  • #27
193
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hmmm, maybe so. 54 seems like the most resenable awnser so that must be it. :tongue:
 
  • #28
Gokul43201
Staff Emeritus
Science Advisor
Gold Member
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cdhotfire said:
Yes yes I also said it was 54, in a later post, and Casey said it was not 54. So :cry: .
I'm sure Casey meant to say that you have not solved it.

Clearly, your method was not the correct one, and you were very lucky to get the correct answer with the wrong method.
 
  • #29
193
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Indeed I was but still I got the right awnser, so he should not have lied. :redface:
 
  • #30
cronxeh
Gold Member
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if 54 is the answer and that is the problem - this is pathetic.

so far here is what i cooked up.. and i gotta hit the snooze button now.. and plus im stuck anyway


x1 x2 y
1 2 9 odd
3 4 20 even
5 6 12 even
17 12 ? ???

So I was thinking first number is always odd.. and second one is always even, but their resultant is not always the same.

I tried some linear dependence:

9 = 1A + 2B
20= 3A + 4B
12= 5A + 6B

A=-15/2 B=33/4
y = Ax1 + Bx2

Works good for 1st and 3rd problems.. I tried to see the relationship between the two linear sets.. and.. well nothing. Doesnt work for 2nd equation (3 4 20).

But yea. if its 54.. blah at you
 
  • #31
137
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cronxeh,

54 being the correct answer (by the method I discribed) does not make this a pathetic problem. Brain teasers (at least the good ones) require you to think outside of the box and generally have a solution that, when you discover or hear about it, you think "that was so simple, why didn't I think about that?" or "why didn't I think of that sooner?"
If the 'teaser' just requires you to derive some gigantic, boring formula, then it's really just another one of your everyday word problems.
 
  • #32
cronxeh
Gold Member
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well arent im glad that this isnt one of those pathetic problems :)
 
  • #33
193
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lol, why arent you? :shy:
 
  • #34
193
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Wheres Casey when you need him? :grumpy:
 
  • #35
cronxeh
Gold Member
961
10
seriously man i need to know the answer :cry:
 
  • #36
193
0
Me too. I think im gonna commit suicide if i dont know in, 1 2 3, bang bang. :tongue2:
 
  • #37
6
0
The answer is most definitely 9*6. There is simply no other less complex solution. 54 is correct.
 
  • #38
193
0
thanks for the insperation :biggrin:
 

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