Let n = 12 Let r = 6 Replace every n! with 12 and every r! with 6 and then do the math. nCr = 12!/[(12 - 6)!*6!] nCr = 479001600/(720)(720) nCr = 479001600/518400 nCr = 924 There are 924 ways or combinations to select 6 city commissioners from a group of 12 candidates
