Question 1052849
nCr = n!/[r!(n-r)!]
15C3 = 15!/[3!(15-3)!]
= 15*14*13*12*11*10*9*8*7*6*5*4*3*2*1/[3*2*1*12*11*10*9*8*7*6*5*4*3*2*1
simplify:
15*14*13/[3*2*1] = 455 different ways the committee can be selected.
:
I don't understand b, I don't know how many ways there are to get to each of the 6 locations.
:
John