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Mr. X invites 15 relatives to a party: his mother, three uncles, two aunts, four brothers, and five cousins. If the chances of any one guest arriving first are equally likely, find the following probabilities:

a. the first guest is an uncle or a cousin
b. the first guest is a brother or a cousin
c. the first guest is an uncle or her mother

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Total No# of Relatives = 15
<br>a) No of Uncles = 3
<br> No of Cousins = 5
<br> Probability = Number of success ...