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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Given : a bag contains 10 white balls, 5 black balls

need to find out : probability of black ball

solution : total number of balls 10+5 = 15 balls probability = favor of black balls coming out / total number of balls = 5 / 15 = 1/3 therefore the probability of black balls = 1/3