In a box there are 12 orange, 5 white, and 7 blue balls. One ball is picked up randomly. What is the probability that it is neither white nor blue?

Total number of balls = 12 + 5 + 7 = 24 Let E= event that the ball drawn is neither white nor blue = event that the ball drawn is orange. n(E) = 12 Therefore, P(E) = 12/24 = 1/2 ``

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