Showing posts with label probability. Show all posts
Showing posts with label probability. Show all posts

Thursday, 26 July 2012

Brady gets lucky?


Numberphile viewers are brilliant. One of them, Alan Stewart, has very promptly (*) emailed me about the latest video.

In the film, I attempt to throw a one-roll Yahtzee.

The odds of accomplishing such a feat (five matching dice showing any number) are 1 in 1,296.

I achieved the feat on the 627th roll. According to Alan's spreadsheet and graph (below), there was a 38% probability I would have reached my goal so early.

To reach a 95% chance of success, I'd have needed 3,881 rolls.

So 627 doesn't seem such an ordeal after all.


Here's the video:



(*) Alan's email arrived in the numberphile inbox at 10am - exactly one hour after the video was published!