2 1

I have two children. One is a girl who is full of grace because she was born on a Tuesday.
What do you think is the probability that my other child is a girl?

What do you think?

  • 1 vote
  • 9 votes
  • 1 vote
  • 1 vote
waitingforgodo 7 Aug 28

Enjoy being online again!

Welcome to the community of good people who base their values on evidence and appreciate civil discourse - the social network you will enjoy.

Create your free account


Feel free to reply to any comment by clicking the "Reply" button.


"one is a girl"..... Leading me to conclude the other is a boy


The probability of an unknown person being a certain sex is always very close to 50%, regardless of how many siblings they have of a one sex or the other (e.g. a couple that had 14 children who were all girls still has ~50% chance the next one will be another girl.)



I read the first couple sections and didn't get to the 13/27 part. To be honest, I didn't even see that as an option, just looked for the 1/2 and clicked, but I did say ~50%.

You can include a link to this post in your posts and comments by including the text q:618806
Agnostic does not evaluate or guarantee the accuracy of any content. Read full disclaimer.