![[TC] Gaming Forums](https://forum.city-driving.co.uk/images/logo.gif "[TC] Gaming Forums"){kind=logo}
+- [TC] Gaming Forums (https://forum.city-driving.co.uk)
+-- Forum: Community Area (/forumdisplay.php?fid=14)
+--- Forum: Off-Topic Chat (/forumdisplay.php?fid=15)
+--- Thread: Maths riddle, try to solve (/showthread.php?tid=3729)
Maths riddle, try to solve - Kayla - 2012-07-07 19:14
okay guys, I want to know if there's any solution to this riddle.
X + Y = Z
Z + X = A
Z = 9,841
I want one concrete solution (so only 1 solution is correct).
My thougts (Click to View)
RE: Maths riddle, try to solve - Paul - 2012-07-07 19:17
I simpely, dont get it.
Spoiler (Click to View)
RE: Maths riddle, try to solve - KaraK - 2012-07-07 19:19
I bet it's actually easy to understand and solve with some algebra, but I'm not in the mood right now
RE: Maths riddle, try to solve - McGherkin - 2012-07-07 20:28
9 + 0.841 = 9.841
9.841 + 9 = 18.841
X=9
Y=0.841
Z=9.841
However, X and Y could be any two numbers that add up to 9.841. For example:
5 + 4.841 = 9.841
9.841 + 5 = 14.841
X= 5
Y= 4.841
So I don't see how there can be one solution to this problem.
RE: Maths riddle, try to solve - Bradd - 2012-07-07 20:37
Geek.
RE: Maths riddle, try to solve - Pipa - 2012-07-07 20:46
Nevermind did something wrong.
RE: Maths riddle, try to solve - McGherkin - 2012-07-07 20:55
I think there was a condition in the original equation which hasn't been mentioned, such as y=z
RE: Maths riddle, try to solve - Pipa - 2012-07-07 21:05
Afaik this is a undetermined linear system of equations, so you have to guess a bit.
x+y=z
z+x=a -> Z=a-x
=> "a= 9,841+x" and "y=9,841-x"
Trying it with x=1
a=10.841
y=8,841
x+y=z -> 8,841-1 = 9,841
z+x=a -> 9,841+1 = 10.841
(2012-07-07 19:14)Michi Wrote: tbh I think there is an infinite amount of possible solutions, am I right?ye
RE: Maths riddle, try to solve - Nammi - 2012-07-07 21:11
its not possible to solve 3 unknown values with only 2 equations. youll need at least as much equations as unknown values.
RE: Maths riddle, try to solve - Pipa - 2012-07-07 21:17
(2012-07-07 21:11)Nammi Wrote: its not possible to solve 3 unknown values with only 2 equations. youll need at least as much equations as unknown values.
Nah you end up with an unlimited amount of solutions as michi already wrote.
RE: Maths riddle, try to solve - Nammi - 2012-07-07 21:24
ye sure if you apply the mathematical principle "guessing"
i was talking about an explicit solution
RE: Maths riddle, try to solve - Paul - 2012-07-07 21:26
Im unsubcribing to this thread.
I dont get anything of this... Oh my "Vincent".
Spoiler (Click to View)
RE: Maths riddle, try to solve - Pipa - 2012-07-07 21:28
(2012-07-07 21:24)Nammi Wrote: i was talking about an explicit solution
Ye
The stuff i remember slowly is that a linear system of equations can have 3 solutions.
1. no solution
2. exactly one solution
3. infinite amount of solutions
RE: Maths riddle, try to solve - Street - 2012-07-07 21:29
This thread makes less sense than pauls signature.
RE: Maths riddle, try to solve - Paul - 2012-07-07 21:48
Street just completed the bullcrap of this thread
RE: Maths riddle, try to solve - McGherkin - 2012-07-07 21:57
It's called maths, not bullcrap
As above, there's an infinite range of values for X and Y (you can use -10000 and 10009.841).
RE: Maths riddle, try to solve - Nammi - 2012-07-07 22:18
(2012-07-07 21:28)Pipa Wrote:(2012-07-07 21:24)Nammi Wrote: i was talking about an explicit solution
Ye
The stuff i remember slowly is that a linear system of equations can have 3 solutions.
1. no solution
2. exactly one solution
3. infinite amount of solutions
yes, a linear view of the world would be nice. but theres so much crazy shit in math its unreal. If youre interested: google for the solution for the squareroot of a negative number for a little entry
RE: Maths riddle, try to solve - Turkey - 2012-07-07 22:52
(2012-07-07 21:29)Street Wrote: This thread makes less sense than pauls signature.
That made me laugh.