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Sunday, September 25, 2022

Sunrise Problem - With Replacement

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The famous Laplace Sunrise problem asks for the probability of the sun rising tomorrow given that it has risen for the past $n$ days. In th...

Expected number of cards drawing two Aces in a row

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Let's say we shuffle a standard 52-card deck and draw cards one by one looking for.consecutive cards that form a pair (two cards with th...
Monday, August 22, 2022

Factorial moments of the Binomial and related distributions

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Factorial moments are defined as the expected value of the falling factorial of a random variable. In this post, we are going to try to comp...
Thursday, July 7, 2022

The Inverse Sum Theorem

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This post talks about the 'Inverse Sum theorem' which is at the heart of the video for my SoME2 submission . Consider two right angl...
Wednesday, May 18, 2022

Expected values with Bertrand's Paradox

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Bertrand's paradox is a neat problem that shows what happens when we take the words 'at random' a bit too casually. In this pos...

Candles and Cake problem - Probabilities with Bertrand's Paradox

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The video I referred to in the earlier post only shows a Monte Carlo solution but we can find the exact values quite easily using the densit...
Sunday, April 24, 2022

The Problem of points - Without Replacement

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Consider an Urn with $A$ green balls and $B$ red balls. Two players A and B play a game where they draw balls from this Urn one at a time (w...
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Yours Aye, Me
Aesthete, Atheist
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