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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: 11,672 Thanks: 741 UNCLEAR. Supply an example. Thank you.
 September 18th, 2017, 02:22 PM #3 Global Moderator   Joined: May 2007 Posts: 6,438 Thanks: 562 (x-6)(x-11)=0
 September 18th, 2017, 04:39 PM #4 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,672 Thanks: 741 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: 2,959 Thanks: 801 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: 11,672 Thanks: 741 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: 11,672 Thanks: 741 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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