Question

. An office has three xerox machines X1, X2, X3. The probability that on a given day X1works is 0.60. X2 works is 0.75, X 3works is 0.80; both X1, and X2, work is 0.50; both X2, and X3 work is 0.40; both X2 and X3 work is 0.70. The probability that all of them work is 0.25. Find the probability that on a given day at least one of the three machines works.​

Answer 1

Answer:

2nd or 3rd day is the probability at least one of the three machine works.

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