It is interesting to also note how this formula is nice and symmetrical. So the number of combinations is equal to n n-kk. Remember that the.
The old Flash version is here.
How many different ways are there of selecting the three balls. P 10 5 10 x 9 x 8 x 7 x 6 30240. 8 items have a total of 40320 different combinations. It shows how many different possible subsets can be made from the larger set.