Solution to Puzzle #145: The WHO Puzzle

This was perhaps not an easy problem for children, but I got correct responses from Suman Saraf, Abhinav Jain and Pratik Poddar.

The correct answer is ~0.01%, that is the probability of you having the disease is very low, even if you have tested positive. Here is a link to the video with the explanation:

This is a class of problems in conditional probability commonly known as Bayes’ Theorem. The problem given was similar to the Bayes’ Mammogram Problem, for which the solution is explained at:

An Intuitive (and Short) Explanation of Bayes’ Theorem

Hope you all enjoyed the puzzle!


This entry was posted in Solution and tagged , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s