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A door-to-door salesman has found that 2 out of 10 of his calls result in a sale. If on a randomly selected day he makes

A door-to-door salesman has found that 2 out of 10 of his calls result in a sale. If on a randomly selected day he makes eight (8) calls.

What is the probability that he will make: Six sales?

What is the probability that he will make: Two or three sales?

What is the probability that he will make: At least, one sale

what is the probability that he will make: At most, one sale

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