CBSE Class 12-science Answered
Assume that on an average one telephone number out of 15 called between 2 pm and 3 pm on week days is busy. What is the probability that if six randomly selected telephome numbers are called at least 3 of them are busy?
Asked by ayush singh | 22 Dec, 2011, 08:33: AM
Expert Answer
Answered by | 22 Dec, 2011, 09:42: AM
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