A FAMILY OF WOMEN ARE BUYING MOVIE TICKETS THERE ARE 4 MOTHERS 2 GRANDMOTHERS AND 4 RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Because it was arrrrrrgh rated! Did you answer this riddle correctly?
YES  NO  

Shark Trek Did you answer this riddle correctly?
YES  NO  

A fire cracker! Did you answer this riddle correctly?
YES  NO  

Best friend. Did you answer this riddle correctly?
YES  NO  

At the dive-in! Did you answer this riddle correctly?
YES  NO  

It was rated arrrgh. Did you answer this riddle correctly?
YES  NO  

At the dive-in! Did you answer this riddle correctly?
YES  NO  

Spike Lee Did you answer this riddle correctly?
YES  NO  

In Tinsel Town! Did you answer this riddle correctly?
YES  NO  

They are Grandfather - Father - Son. The middle is a father and a son at the same time! Did you answer this riddle correctly?
YES  NO  

You need a rough draft before you have a final copy. Did you answer this riddle correctly?
YES  NO  

Yes. Never say the other half wasn't boys... Did you answer this riddle correctly?
YES  NO  

1/3

This is a famous question in understanding conditional probability, which simply means that given some information you might be able to get a better estimate.

The following are possible combinations of two children that form a sample space in any earthly family:

Boy - Girl
Girl - Boy
Boy - Boy
Girl - Girl

Since we know one of the children is a boy, we will drop the girl-girl possibility from the sample space.
This leaves only three possibilities, one of which is two boys. Hence the probability is 1/3 Did you answer this riddle correctly?
YES  NO  

Don't be knotty! Did you answer this riddle correctly?
YES  NO  

Billy Did you answer this riddle correctly?
YES  NO