SOLUTION: a class had 20 women and 10 man . how many groups of 3 can be selected from the class?
Algebra.Com
Question 528865: a class had 20 women and 10 man . how many groups of 3 can be selected from the class?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
20 women and 10 men is 30 people. Since there are no restrictions on the gender composition of the groups of three, you can simply consider the group of 30 people.
You need to calculate the number of combinations of 30 things taken 3 at a time. )
is the number of combinations of 
things taken 
at a time and is calculated by !})
You can do your own arithmetic.
John
My calculator said it, I believe it, that settles it
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