If there are 28 numbers in a lotto game

Question

If there are 28 number in a lotto game ranging from 1-28, every time it is drawn 6 numbers are selected ramdomly, but a number can’t be selected more than once, how many different combinations are there? 

Answer 1

 

₂₈C₆ = 28!/((28-6)!6!) = (28*27*26*25*24*23)/(6*5*4*3*2) = 376740