After previously discussing permutations, Dr. James McCaffrey of Microsoft Research uses step-by-step examples and full code presentations to explore combinations. A ...

Join Mrs. McCartney for a Mystery Math Mistake, then learn to combine coins in different w Join Mrs. McCartney for a Mystery Math Mistake - T-Pops needs your help! We'll learn about coins and their ...

Currently math.combinations(42,21) returns 538257874439.99994. This of course can't be right, because the number of combinations must always be an integer. And in fact the actual value is 538257874440 ...