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Guest Message by DevFuse


Member Since --
Offline Last Active Today, 04:06 PM

#340514 Random points on x-axis

Posted by witzar on 07 October 2014 - 05:47 PM

Asking about probabilities makes no sense unless there is a probability distribution.

Unfortunately there is no reasonable distribution on R+.

But an obvious distribution exists on interval [0,x], where x is any positive real number.

One thing we can do in such case is to try to solve the problem for [0,x] and then see

if the solution has a limit when we go with x to infinity.

With this approach it's obvious that the probability we look for equals 0.5 for every x,

so obviously it's limit is also 0.5 when x goes to infinity.

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#335048 i am thinking of a number...

Posted by witzar on 08 August 2013 - 05:54 PM

Spoiler for

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#332897 Probability of a rope cut exactly in half, in a single slice

Posted by witzar on 10 June 2013 - 04:37 PM

there are only three possibilities of this experiment after the cut.
1. Left peice is bigger
2. right peice is bigger
3. left peice = right peice
so the probability he calculated is 1/3


It would be true, if all three possibilities were equally probable.

Which is not the case.

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#330214 a simple pattern.?!

Posted by witzar on 01 April 2013 - 01:59 PM

Spoiler for obvious formula for n-th term

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#328252 Matryoshka

Posted by witzar on 14 February 2013 - 11:16 AM

Spoiler for all solutions

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#328131 1966

Posted by witzar on 08 February 2013 - 01:59 PM

Spoiler for Solution

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#327871 Rubber Stamping Dots

Posted by witzar on 31 January 2013 - 05:19 PM

there are 3 paths for all square roll..G N R, which way you pass?

Spoiler for I can pass...

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#321223 All the people like us are We, and everyone else is They.

Posted by witzar on 05 July 2012 - 12:47 PM

the difference may be infinitesimally small but it exists...

1. The difference of two real numbers numbers always exists and is also a real number.
2. A real number cannot be "infinitesimally small".
3. Please don't answer "thanks for the explanation, but I'll stick to... " :)
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#319630 A Child and a Staircase

Posted by witzar on 21 June 2012 - 03:13 PM

Spoiler for

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