Mathematics
WAEC 1991
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
-
E.
1
Correct Answer: Option D
Explanation
P(X \(\cup\) Y) = \(\frac{1}{3} + \frac{2}{5}\)
= \(\frac{11}{15}\)
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