probability of collision
- Thread starter pandamath
- Start date
Dr.Peterson
Elite Member
- Joined
- Nov 12, 2017
- Messages
- 16,869
Posting Guidelines (Summary)
Welcome to our tutoring boards! :) This page summarizes main points from our posting guidelines. As our name implies, we provide math help (primarily to students with homework). We do not generally post immediate answers or step-by-step solutions. We don't do your homework. We prefer to help...
www.freemathhelp.com
Please show us what you have tried, and where you are stuck.
There are several ways you might do this, so I'd want at least to see what method(s) you have learned. I'd probably start by finding the number of ways the choices could be made; and I might look for the probability that there is no collision before answering the question. (Clearly we are to suppose they make their choices independently, without taking any balls away.)
pka
Elite Member
- Joined
- Jan 29, 2005
- Messages
- 11,978
Is this an equivalent setup?
There are two boxes containing \(n\) numbered balls(1 to n) . One box for each person.
Alice & Bob each choose three balls from their box.
What is the probability that they have chosen exactly numbered ball in common?
There are two boxes containing \(n\) numbered balls(1 to n) . One box for each person.
Alice & Bob each choose three balls from their box.
What is the probability that they have chosen exactly numbered ball in common?