There is a box which contains 6 pens, 4 of them black, 1 of them blue, and
1 of them red. What are the chances of picking 1 red then 1 blue without
replacement.

Carlos Rodriguez <carlos@math.albany.edu>
This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998