In how many ways can 3 pizza toppings be choosen from 12 available toppings? i tell the answer was 12x11x10 but it was wrong..
2007-02-09 05:14:12 · 4 answers · asked by huseyinarslan 1 in Science & Mathematics ➔ Mathematics
12 C 3
=12!/3!9!
=12*11*10/6
=2*11*10
=220
2007-02-09 05:20:49 · answer #1 · answered by san 3 · 1⤊ 0⤋
( 12 x 11 x 10 ) / ( 1 x 2 x 3)
you devide by 1 x 2 x 3 because the order in which you choose them does not matter so sausage onions and mashrooms is the same as mashrooms onions and sausage.
2007-02-09 13:18:23 · answer #2 · answered by zdanev78 3 · 2⤊ 0⤋
Need more info.. can the toppings be chosen more than once? Does the order of choosing matter? For example if I choose pepperoni, then mushroom, then cheese is that the same or different if I choose mushroom, then cheese, then pepperoni?
2007-02-09 13:19:13 · answer #3 · answered by slider 2 · 1⤊ 0⤋
12*11*10, assuming you can only choose each topping once.
2007-02-09 13:18:15 · answer #4 · answered by bozo 4 · 2⤊ 0⤋