SOLUTION: a computer with an old processor locks up if more than4 applications run simultaneously.if the oner has 20 applications storedin his program file,how many different sets of 4 can h

Algebra ->  Permutations -> SOLUTION: a computer with an old processor locks up if more than4 applications run simultaneously.if the oner has 20 applications storedin his program file,how many different sets of 4 can h      Log On


   

Question 288815: a computer with an old processor locks up if more than4 applications run simultaneously.if the oner has 20 applications storedin his program file,how many different sets of 4 can he run,so that his computer does not lock up?
Answer by brucewill(101) About Me  (Show Source):
You can put this solution on YOUR website!
In this case, since the computer can load the 4 programs in any sequence, it's not a permutation, rather, it is combinations. This is 20 things, 4 at a time.
%2820%21%2F16%214%21%29
%2820%2A19%2A18%2A17%2A16%21%29%2F%284%2A3%2A2%2A1%2A16%21%29
highlight%284845%29 ways to load the various combinations.