PDF USING LOTTERIES IN TEACHING A CHANCE COURSE Written by the ...

Again by our counting principle, there are 5 × 4 × 3 × 2 × 1 = 120 possible orders. Thus, the number of possible sets of 5 white balls not counting order is 228,826,080/120 = 1,906,884. This is the familiar problem of choosing a set of 5 objects out of 49, and we denote this by C(49,5). Such numbers are called binomial coefficients. ................
................