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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 30 seniors and 6 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.)

Answer :

a)P(all seniors) =(25C3)/(30C3) =0.5665

b)P(All Juniors)=(5C3)/(30C3) =0.0025

c)P(2 senior and 1 Junior) =(25C2)(5C1)/(30C3) =0.3695

d)P(1 senior and 2 Junior) =(25C1)(5C2)/(30C3) =0.0616

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