There are 9 jars each with unique labels.

Someone has come and removed all the labels and mixed them up.

If you put the labels back on the jars (without knowing the contents), what is the expected number of labels which would match the contents?

the probability is of course one(1). The average isnt one and the only possible number isnt one but according to probability rules there is a 1 in 9 chance that you will label any given jar correctly. 1/9 probability times the 9 jars = 1

Posted by mike on 2003-07-11 13:29:31