A salesman has a 60% chance of making a sale to each customer. The behaviour of successive customers is independent. If two customers A or B enteres the shop, what is the probablity that the salesman will make a sale to A or B?

The salesman has 60% of making a sale to A or B

) two shooters shoot the target. The probability that the first shooter hits the target in a single shot is 0.7 and the probability that the second shooter hits the target in a single shot is 0.5 the shooters shoot 20 times simultaneously to a target. What is the most probable number of times that at least one of shots hits the target?

thanks a lot for answer :)

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Originally Posted by sayedmaisam

) What is the most probable number of times that at least one of shots hits the target?.

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Please clarify your question. Are you asking what is the most probable number of times that each shooter will hit the target given that each takes 20 shots?