Probability
posted by Betty .
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk.
The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?

8*7*6*7*6*5*4*10!
or
8!/(83)! * 7!/(74)! * 10!/(1010)!