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September 18th, 2017, 03:55 AM  #1 
Newbie Joined: Sep 2017 From: berlin Posts: 5 Thanks: 0  math formula with concrete number as a result
Hi, can someone help me? I would need a really challenging math forumula/s with end results 6 and 11. Anyone? pls The end result numbers are supposed to be a hint. Thank you. p.s. It really needs to be a proper brain teaser, something really difficult. Last edited by skipjack; September 20th, 2017 at 06:03 AM. 
September 18th, 2017, 06:33 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,600 Thanks: 954 
UNCLEAR. Supply an example. Thank you.

September 18th, 2017, 02:22 PM  #3 
Global Moderator Joined: May 2007 Posts: 6,641 Thanks: 625 
(x6)(x11)=0

September 18th, 2017, 04:39 PM  #4 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,600 Thanks: 954 
Wonder what he means: "challenging formula" ?

September 19th, 2017, 04:31 AM  #5 
Newbie Joined: Sep 2017 From: berlin Posts: 5 Thanks: 0 
challenging formula means something that is quite a challenge to solve. we are not talking "secondary school math" here. e.g. not 16  10 = 6 I want a tough mathematic exercise with end result/s 6 and 11 (could also be 6.11 or 11.6) as I am absolutely lost in math, hence I'm looking for help. The result will be then a hint for something else. Thx Last edited by skipjack; September 20th, 2017 at 06:05 AM. 
September 19th, 2017, 05:09 AM  #6 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,261 Thanks: 894 
Why in the world would "16 10= 6" be "secondary school math"? That looks like third or fourth grade to me. The problem mathman suggested, to solve $\displaystyle x^2 17x+ 66= 0$ might be "secondary school math".
Last edited by greg1313; September 19th, 2017 at 07:24 AM. 
September 19th, 2017, 05:21 AM  #7 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,600 Thanks: 954 
Are you looking for something NOT really mathematical, but more a "trick" (since you mention "puzzle") ?? Can you get someone to help you post your problem; as is, it is unclear...and keeps being unclear! 
September 20th, 2017, 05:53 AM  #8 
Newbie Joined: Sep 2017 From: berlin Posts: 5 Thanks: 0 
Well, ok, fair enough, the example I provided is "primary school" one, but I only wanted to exaggerate that it can not be easy. I can't explain it in any other way then  mathematical exercise, mathematical formula to solve, to count, where end result will be number 6 and 11. it can be 6.11 or 11.6 or two formulas / exercises. It is aimed for math university graduate. (masters) so it needs to match a certain level of difficulty. The end result is then hint for something else. Last edited by skipjack; September 20th, 2017 at 06:07 AM. 
September 20th, 2017, 06:23 AM  #9 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,600 Thanks: 954 
If a problem is set up using (as example) speed, distance and time, such that the answer is the time at which a certain distance is travelled, and this time is 6.11 a.m. (meaning clock time); is that what you're after? 
September 20th, 2017, 07:51 AM  #10 
Newbie Joined: Sep 2017 From: berlin Posts: 5 Thanks: 0 
Ok, I'm lost and I give up. I am not "math person" and I think this is just two different worlds. The answer does not need to symbol any time, distance.. or anything... just plain number 6 and 11. They can be two examples. In other words, this: x² − 17x + 66 = 0, but 1000 times harder. Last edited by skipjack; September 20th, 2017 at 07:59 AM. 

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concrete, formula, math, number, result 
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