(adsbygoogle = window.adsbygoogle || []).push({}); Please help probability asap!!:)

I have tried to understand this problem a million times, and I can not. The answer I have, however it is not good unless I know how to get there and i do not!!!

A Librarion has estimated that 5% fo the books that people sign out are returned damaged in some way. While 1% of the bookd are never returned at all.

a) If 4 people each sign out one book and all are returned, what is the probabiliyy that exactly 2 of the books will be returned damaged??

b) if 10 people each sign out ne bool, what is the probability that at least 1 of the books will never be returned?

c) if 20 people each sign out one book, what is the probability that between 2 and 4 (inclusively) are returned damaged and exactly 2 are never returned at all>>??

the answers ar e

a) .0135

b).096

c).0042

HELP PLEASE!!!!

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# Calculate the chance books will be returned to library

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