Question

A bag contains 18 black and 20 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

A 4/19 Correct Answer Incorrect Answer
B 8/19 Correct Answer Incorrect Answer
C 3/19 Correct Answer Incorrect Answer
D 10/19 Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

Let number of balls = (18 + 20) = 38
Number of white balls = 20
P (drawing a white ball) = 20/38 = 10/19

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