First of all, make the sets according to given statement and assign the names to sets like A and B. Then, intersect the sets and check, if there is any element is common in result as output, then use the following formula:-
P(AUB)=P(A)+P(B) and before applying the said formula, find out the P(A)=n(A)/n(S) and P(B)=n(B)/n(S).
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