A bag contains 3 white 6 red 5 blue identical b... - WAEC Mathematics 1997 Question
A bag contains 3 white, 6 red, 5 blue identical balls. A ball is picked at random from bag. What is the probability that is either white or blue?
A
9/14
B
4/7
C
3/7
D
5/14
correct option: b
P(W or B) = 3/14 + 5/14 = 4/7
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