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kiennguyen
- Senior | Next Rank: 100 Posts
- Posts: 73
- Joined: Sat Oct 03, 2009 10:37 pm
try this one! OA later! please clarify your answer!
Tanya prepared four different letters to be sent to four different addresses. For each letter, she prepared an envelope with its correct address. If the 4 letters are to be put into the envelopes at random, what is the probability that only one letter will be put into the envelope with its correct address?
Tanya prepared four different letters to be sent to four different addresses. For each letter, she prepared an envelope with its correct address. If the 4 letters are to be put into the envelopes at random, what is the probability that only one letter will be put into the envelope with its correct address?
