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 | 22nd Dec, 2011, 08:33: AM

Expert Answer:

Answered by  | 22nd Dec, 2011, 09:42: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.