If events X and Y are mutually exclusive P X 1 ... - WAEC Mathematics 1991 Question
If events X and Y are mutually exclusive, P(X) = 1/3 and P(Y) = 2/5, P(X∪Y) is
A
o
B
2/15
C
4/14
D
11/15
correct option: d
P(X \(\cup\) Y) = \(\frac{1}{3} + \frac{2}{5}\)
= \(\frac{11}{15}\)
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