Mathematics, 25.10.2021 14:00 xmanavongrove55

In endurance horse racing, people over the age of 15 are called seniors and people 15 years or younger are called juniors. An endurance horse race consists of 25 seniors and 5 juniors. (Give answer as a fraction or a decimal out to at least 4 places. If your answer is very small use scientific notation for example 3.3421E-6.) What is the probability that the top three finishers were:

(a) all seniors

(b) all junior

(c) 2 seniors and 1 junior

(d) 1 senior and 2 juniors

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