Math Help Online Probability
March 24th, 2008
Question: Math question! Please help!?
There are 30 different versions of an online homework. These are assigned randomly to the students. If a group of 5 classmates decide to work on the homework together, what is the probability that at least two of them receive the same version?
Answer: P[all 5 get different versions]
= [30/3][29/3][28/30][27/30][26/30]
= .7037
so P[at least 2 get the same version]
= 1 – .7037
= .2963 or 29.63%
—————————
Experimental Probability – YourTeacher.com – Math Help
Related posts
Posted in Online Math Help | 
Tags: education, games, math, math help online probability, reference, resources