Saturday, February 13th, 2010
There are n letters for n people.
But the envelopes are blank.
The postman deliver the letters randomly to all the receivers.
What is the probability that NO receiver get his right letter?
Please explain in details, and in the general case and give the general fomular (the case of n people).
Thank you very much.
A "derangment" is a permutation of elements such that each element is placed in a spot different from it’s original position.
Derangement numbers grow very quickly according to a recursive relationship. Like many problems in combinations and permutations, it must be pre-defined what the number of derangements is when n = 0. As such, mathematics defines the number to be 1.
So, If n = 0, it is defined that there is one way to "derange" the available elements (since there are none, it must just be defined, like 0!). If n = 1, it is impossible to derange the 1 item. From there, the formula for calculating the number for derangements goes as follows:
Let X(n) be the number of ways to derange n elements. X(0) = 1, X(1) = 0, and:
X(n) = (n-1) * (X(n-1) + X(n-2))
X(2) = (1) * (X(1) + (X(0)) = 1 * (0 + 1) = 1. If there are two items, there is only one way to derange them. BA.
X(3) = (2) * (1 + 0) = 2. If there are three items, there are two ways to derange them: BCA, CAB.
X(4) = (3) * (2 + 1) = 9. If there are four items, there are nine ways to derange them. BADC, BCDA, BDAC, CADB, CDAB, CDBA, DABC, DCAB, DCBA.
Technorati Tags: Ba, Cdba, Combinations, Dcba, Derange, Derangement, Element, Elements, Envelopes, Fomular, Mathematics, Nine Ways, Number 1, People, Permutation, Postman, Probability, Receivers, Recursive Relationship, Two Ways
Posted in letter | 2 Comments »
Sunday, February 7th, 2010
I haven’t gotten my tax rebate direct deposited yet and I read that other people received letters with how much they are getting a month or so ago. I didn’t receive one, but I should be getting a rebate based on my W-2. Because I didn’t receive a letter, does it mean I’m not getting a rebate?
Some people will get their rebate by direct deposit before they get their letter in the mail. Just keep watching for the letter and put it up. You’ll need it when you file your 2008 taxes.
Technorati Tags: Direct Deposit, Letter In The Mail, People, Tax Rebate, Tax Stimulus Package
Posted in letter | 5 Comments »
Saturday, February 6th, 2010
To draw bubble letters, draw elliptical shapes in place of straight lines in pencil, trace the outline in marker and erase erroneous pencil marks. Sketch out rounded and bubbly letters with creative tips from a professional illustrator in this free video on drawing.
Expert: Joel Hickerson
Contact: www.grindog.com
Bio: Joel Hickerson has illustrated more than 50 books, including “The Complete (Rugby) Referee” and “I Can Draw Foods I Like to Eat.”
Filmmaker: Todd Green
Duration : 0:3:33
(more…)
Technorati Tags: Animals, art, cartoons, drawing, from, illustration, lessons, Nature, People, sketching
Posted in letters | 10 Comments »
Sunday, January 31st, 2010
I’m applying for a job and they’ve requested both–references, and letters of recommendation
Letters of recommendation are typically given from someone you have worked with on a professional or educational level and detail your strengths, which emphasize how you qualify for the position you are applying for.
References are typically listing contact information of previous co-workers, managers or friends that can be contacted to verify your credentials or character.
Usually letters of recommendation are asked for more academic positions and references for professional – asking for both is odd. However, if that is the case – the letters of recommendation would be someone that can verify work you have done and write a short description. You should be able to list that person also as a reference too, if you feel that person knows enough about you to answer questions if contacted. However, if not you would want to put down references as people that have known you for at least a year, and could answer questions about your character/ work ethic when contacted.
Technorati Tags: Academic Positions, Answer Questions, Applying For A Job, Character Work, Co Workers, Contact Information, Credentials, Educational Level, Friends, Letters Of Recommendation, People, Recommendation Letters, Short Description, Work Ethic
Posted in letters | 3 Comments »
Saturday, January 23rd, 2010
At school we are going on a trip to Washington DC. I live in Oahu, Hawaii. We are sending out donation letters asking people to donate. I need help thinking of who to send to. So far I know I’m sending to Linda Lingle, Boys and girls club, and a foundation something or other.
Businesses, grants and invididuals, large and small, are overwhelmed with requests from young people wanting money for trips. Most of them do NOT give money to individuals for such — instead, they give money to nonprofit organizations focused on helping the community.
A better approach is for your class, as a whole, to send out letters, on your school letterhead. This letter needs to say why this trip will benefit your community (not just you), how much the student themselves are going to contribute to the trip (are you babysitting or engaging in any activities to raise money?), and how much are the families going to contribute to the trip.
Technorati Tags: Asking For Donations, Babysitting, Boys And Girls, Boys And Girls Club, Donation Letters, Going On A Trip, Grants, Helping The Community, Linda Lingle, Nonprofit Organizations, Oahu Hawaii, People, Raise Money, School Letterhead, Washington Dc
Posted in letters | 1 Comment »
Wednesday, January 20th, 2010
I want to write a letter to President Obama.
Im curious if anyone knows who gets the mail first and how they determine which letters to show to the President.
I guess bottom line is it a waste of time to send the letter if there is no chance the President will ever see it ?, Thanks.
There is a mailroom for the White House. The mail is obviously checked by x-ray and other methods before anyone ever reads it. In the mailroom, there are employees who read the mail first determine whether the correspondence is timely, whether it contains any threats, what the topic is, and any main points you may bring up.
Best advice for a letter to the White House:
Be brief. There is no need to write a 5 page letter if a 2 pager will do.
If you really think your letter might be important enough and would get looked at by way higher ups, make sure you write a _formal_ letter and this is _without_ exception.
There are guides to doing this sort of thing, if you aren’t a master of the art of letter writing, you may want to look at business letters you have received to use as a guide, or try a search if you lack confidence in this sort of thing. Outlining what you want to say first may also help you organize your letter.
The volume of mail into the White House is large, so if your letter is one of those that any of the higher-ups ever do read, you may never know it.
Oh, and I think the people who make those sorts of decisions are liasons who look for certain things of interest the President may be looking for. The mailroom is not the only place the President receives messages from consituents. Don’t forget the comment line, email, and telegrams.
Technorati Tags: Bottom Line, Business Letters, Confidence, correspondence, Decisions, Email, Formal Letter, Guess, Liasons, Mailroom, People, Read Mail, Sorts, Telegrams, Ups, Waste Of Time, White House, Write A Letter, X Ray
Posted in letters | 1 Comment »
Sunday, January 17th, 2010
I’ve seen in many sites that people are able to make letters in their phrases or sentences come so close together that they overlap. I tried looking for the code to make the letters overlap but the generator I found made lines overlap, not letters. Does anyone know how the code for making letters overlap?
in your CSS, you need have this in the area of where your text is.
Lets say the following code is for the writing you want to be closer. (*= the code to be added in)
body {
font: arial;
size: 12px;
*letter-space: -5px;
color: #000000;
}
Just an example, but thats how people do it 
Technorati Tags: Css, People, Phrases, Sentences
Posted in letters | 1 Comment »
Friday, October 23rd, 2009
If you were to write a 250 word letter to your paper over anti(It would a letter to the editor against the illegals and all of their freebies, states that have taken law and made it tougher for illegals there) illegal Immigration , how could you do it and not sound like a racist, yet get people’s attention to this growing problem? Any ideas? The letter would have to apply to all sorts of communities and cities.
Speak about laws, money, financial strains, effects on schools and education, deportation policies, Congressional actions (or lack of), etc. As long as you do not mention or target specific nationalities, language groups, ethnicities, or races it will be fine. Keep it to the point – its a legal and civil concern.
Technorati Tags: All Sorts, Anti Immigration, Congressional Actions, Deportation, Education, Ethnicities, Financial Strains, Illegal Immigration, Illegals, Language Groups, Letter To The Editor, Money, People, Racist, Word Letter, Write A Letter
Posted in letter | 15 Comments »
Saturday, October 17th, 2009
I want to send the letters to the actors and the actress of Harry Potter,
but I don’t know how do I do it.
I hope they personally read the letters,but Is such it possible?
If I want to send to the movie studio,how do I do?
Did anyone have some experience?
I’m sure there are official fan clubs you can look up online. Also see if any of the actors are on myspace, facebook, and/or twitter. They may or may not read some, but usually have people taking care of that for marketing purposes. But even actors and actresses go online and like the internet, so you never know what they read themselves 
Technorati Tags: Actors Actresses, Actors And Actresses, Actress, Facebook, Fan Clubs, Harry Potter, Marketing, Movie Studio, People
Posted in letters | 3 Comments »
Tuesday, October 13th, 2009
I am trying to sort out the filing cabinet at work which has been in a dreadful mess for the last three years. How long should you keep letters sent out to people and general documents for. Some of it is general letters, others personnel letters where the person has worked for the company and now left.
I want to get it in some sort of order so I can at least find things when I need them.
What about minutes of meetings as well.
7 Years
Technorati Tags: Filing Cabinet, Last Three Years, Minutes Of Meetings, People
Posted in letters | 8 Comments »