Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
jishan
Group Title
Three letters are dictated to three persons & an envelope is addressed to each of them.the letters are inserted into the envelopes at random so that each envelope contains exactly one letter. find probability that at least one letter is in its proper envelope.
 one year ago
 one year ago
jishan Group Title
Three letters are dictated to three persons & an envelope is addressed to each of them.the letters are inserted into the envelopes at random so that each envelope contains exactly one letter. find probability that at least one letter is in its proper envelope.
 one year ago
 one year ago

This Question is Closed

kropot72 Group TitleBest ResponseYou've already chosen the best response.0
Let the 3 letters be identified as a, b and c. The total number of arrangements of the letters is as follows: a b c a c b b a c b c a c a b c b a Given that the envelopes are in the order a, b, c, can you see how many of the six possible arrangements will match at least one letter with the correct envelope?
 one year ago

jishan Group TitleBest ResponseYou've already chosen the best response.0
what is prob ??????
 one year ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.0
In four out of the six possible arrangements at least one letter is matched with the correct envelope. So what is the probability of a match?
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.