POSSIBLE TRIFECTA COMBINATIONS IN A RACE

 

FIELD SIZE	COMBINATIONS
5	60
6	120
7	210
8	336
9	504
10	720
11	990
12	1320
13	1716
14	2184
15	2730
16	3360
17	4080
18	4896
19	5814
20	6840
21	7980
22	9240
23	10626