Subject: Gender probabilities in a family with two children
Date: Sat 2/6/99 1:20 PM
From: Brett Rogers

This question has caused a lot of debate at work. Can anyone explain the mathematical difference between the following two scenarios?

  1. A woman has two children. At least one is a girl. What is the probability that her other child is a boy?
  2. A woman has two children. She is standing in front of you with her 10-year-old daughter. What is the probability that her other child is a boy?

Respectfully,
Brett Rogers

|Reply| |Previous| |Next| |Down| |Exchange index| |Contents| |Store|

Copyright © 1996-2018 Alexander Bogomolny

71950075