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There are 7 black balls and 9 red balls in an urnt |f4 balls are drawn without replacement, what is the probability that no more than 1 black ball is drawn? Express your answer as a fraction or a decimal number rounded to four decimal places. The computer that controls a bank's automatic teller machine crashes a mean of 0.3 times per day. What is the probability that, in any seven-day week, the computer will crash exactly 3 times? Round your answer to four decimal places