Raymond B. answered • 03/24/21
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n(A) = 10
ratio of 1 to 3 means n(A) is 1/(1+3) = 1/4 n(X)
1/4 times 40 = 10
Pia A.
asked • 03/24/21Statistics and Probability
A set X is partitioned into two subsets A and B in such a way that n(A) = 3n(B). If n(X) = 40, then what is n(A)?
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