assuming each dog has 1/6 probability of winning and 1/6 for any other place:
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In a 6 dog race, what is the probability any given dog would finish in the top 2?
2/6 = 33.33%
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6 dog race, what is the probability with 2 selections, one will finish in top 2, and both finish in top 2?
only one in top 2: 2C1*4C1/6C2 = 8/15 = 53.33%
both in top 2: 2C2/6C2 = 1/15 = 6.67%
both outside top2 : 4C2/6C2 = 2/5 = 40%
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same with 3 and 4 selections, chances of picking the winner, and chances of picking 1st and 2nd?
if you choose 3 selections:
you have both dogs in top 2: 2C2*4C1/6C3 = 1/5 = 20%
only one dog in top 2: 2C1*4C2/6C3 = 3/5 = 60%
no dogs in top 2: 4C3/6C3 = 1/5 = 20%
with 4 selections:
top 2 covered: 2C2*4C2/6C4 = 2/5 = 40%
only 1 dog in top 2: 2C1*4C3/6C4 = 8/15 = 53.33%
no dogs in top 2: 4C4/6C4 = 1/15 = 6.67%
Last edited by md46135; 09-03-2017 at 07:08 AM.