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in a hospital, there are 4 dialysis machines. The chance of any one of them being defective during a day is 1/6. Find the probability that at least two machines will be in working order out of 4 so that at least two patients may use the dialysis machines.

    • Posted by Deepesh Khandelwal 7 years, 8 months ago

    CBSE > Class 12 > Mathematics
    • 0 answers
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