School, adhel have a very smart teacher, but unfortunately he was forgetful, here's the story
--------------------
Adhel School will hold a farewell party, the teacher happened to farewell the committee chairman, his job was to write an invitation to the invited guests as much as (n) invitation, and he immediately put it into the envelope, without writing diundangan addresses, but he realizes the kelupaannya, then he write address the address into it at random invitation n address, and also randomly inserted into the addresses inside the envelope containing the invitation.

the question is:

a.berapa probability value pack includes teachers' guest address correctly, into the right envelope? (Please dimaklum teacher was forgetful)

b.andaikan probability value that = k

specify lim n k?

Edit this page