Peter R.

asked • 03/25/18

Probability

A high school class of 5 seniors, 10 juniors, 12 sophomores, and 5 freshmen. Exactly 2 of the juniors are male, and exactly 4 of the sophomores are female. If two students are randomly selected from this class, what is the probability that the pair consists of a female junior and a male sophomore?
 
So I understand the basics of:  Probability of the Event = number of successful event/total number of possible events

I've done 32C2 to determine there are 496 ways to select 2 individuals out of the entire high school class.  What I can not figure out is how to figure out the selection of 1 female junior and 1 male sophomore to then determine the probability.

1 Expert Answer

By:

Mark M. answered • 03/25/18

Tutor
5.0 (278)

Mathematics Teacher - NCLB Highly Qualified

Peter R.

8/27 is roughly .296

.296x.296 is approximately a .088 probability.  How do you get the 8/27 is really what's confusing me.  Not sure where those numbers are originating from.  
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03/25/18

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