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mathforfun · MATH for FUN - A place to post and work math problems.

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  • Members: 3004
  • Category: Mathematics
  • Founded: Dec 18, 1998
  • Language: English
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Two players take turns choosing one number at a time (without replacement) from the set {-4, -3, -2, -1, 0, 1, 2, 3, 4}. The first to obtain three numbers...
12 Jun 29, 2004
10:40 pm

Edward Moore
emoore06905
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Hi folks, if you have time and pleasure, please take a look at the following problem: What is the number of integer solutions of the equation $x_1 +...+x_n ...
9 Jun 29, 2004
2:55 am

mcalindan
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... times you...
2 Jun 28, 2004
7:35 pm

slim_the_dude
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Hi, Is there any program that will write an equation in its book form as opposed to the simplified form? What I am looking for is some kind of editor...
3 Jun 24, 2004
12:58 pm

clooneman
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I am posting this becasue I think this article will benefit many people. I have posted this article in its entirety and unmodified, with respecting all...
2 Jun 23, 2004
5:08 pm

clooneman
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if a day and a night is only 12 hours instead of 24 hours, how many full moons in one year? regards,...
2 Jun 23, 2004
2:23 pm

slim_the_dude
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For those who recieved an email of the previous deleted message, disregard it because it was full of mistakes. Here's the corrected post. For those who don't...
1 Jun 21, 2004
8:39 pm

pdiibq
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Hi, thanks for the instantaneous response. well what exactly is the bijection that you can think of from R to the unit open disk? I don't think its possible!...
8 Jun 18, 2004
2:40 pm

adh_math
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Read my embedded reply ... ... Well, that was a nice theorem, i do remember having gone thru it during my undergraduate days. But never knew that its being...
1 Jun 16, 2004
7:25 pm

sudarshan
sudarshansr
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This may sound simple but boggling , can u say what are the times the minutes and hour hands meet in 12 hrs, may be easily we could come to a solution but...
2 Jun 14, 2004
2:50 pm

Ayyoub
aalqaissi
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Prove that all the prime numbers are of the form 4*n+1 or 4*n+3. Mansoor....
5 Jun 14, 2004
12:23 pm

clooneman
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Is there a transformation from R-->R^2 where in the real line gets transformed onto an open disk in R^2 say x^2+y^2<1 In other words :- Is it impossible for us...
2 Jun 13, 2004
7:30 am

Julien
julien_santini
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Can we find a homomorphism which is neither Injective nor Surjective ? Substantiate. __________________________________ Do you Yahoo!? Friends. Fun. Try the...
8 Jun 12, 2004
3:25 pm

Julien
julien_santini
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I found this a long time ago. Check it out. http://www.mycathatesyou.com...
2 Jun 11, 2004
12:58 pm

clooneman
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Can u find numbers N,P,Q,R,S,T,U,V,W such that the following 16 numbers are perfect squares? NP,N+P,NQ,N+Q,NR,N+R,NS,N+S,NT,N+T,NU,N+U,NV,N+V,NW,N+W Mansoor. ...
3 Jun 10, 2004
9:54 pm

adh_math
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I had a hard time explianing this to my brother Thursday night, and he had a helluva time finding holes in my words. Partly because this is a new puzzle I...
5 Jun 10, 2004
12:23 am

pdiibq
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I've been getting a whole load of spam, so I'm hiding my email from harvesters....
2 Jun 9, 2004
1:02 pm

clooneman
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If you have a ping pong ball and a weight that with make it have neutral bouyancy in water, will it have neutral bouyancy in 5 feet of water? Meaning, you can...
4 Jun 9, 2004
2:24 am

bqllpd
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لطفاً پيام زير را به دقت مطالعه فرماييد. پايگاه اطلاع‌رساني همايش‌ها و سمينارهاي...
2 Jun 7, 2004
7:05 pm

armin farzaneh
armin_farz
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Jason...how darn elegant!!!!....that&#39;s really a poem..... Carlos ... As others have observed, there are actually 8 powers of 10 in 37!, so that h=0. Also,...
1 Jun 7, 2004
6:14 pm

Carlos Assale
c_assalebr
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Given that 37! = 13763753091226345046315979581abcdefgh0000000, determine, with a minimum of effort, the missing digits a, b, c, d, e, f, g, and h. No...
5 Jun 7, 2004
2:36 pm

adh_math
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In a message dated 2004-06-06 8:03:08 AM Eastern Daylight Time, ... i would think not. from my own experience with neutrally buoyant objects in water, such an...
1 Jun 7, 2004
2:09 am

MorphemeAddict@...
lojbaner
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What is the expected number of times you would have to toss a fair coin in order to obtain n consecutive heads? For example, you could obtain two consecutive...
4 Jun 4, 2004
9:39 pm

jason1990
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If all the points have equal weight, I'd say that if you start with (0,1) and (0,-1), the center of gravity of those two points is at (0,0). When you add the...
2 Jun 2, 2004
12:30 am

bqllpd
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If you have three points on a plane at (-2,0), (1,1) and (1,-1), is the center of gravity at (0,0)?...
1 Jun 1, 2004
11:34 pm

bqllpd
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Often, physics provides solutions to mathematical problems that mathematicians find non-rigorous, but are nonetheless convincing. Here is an example that some...
8 May 31, 2004
3:25 pm

adh_math
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Hi Is there any competitions held internationally to recognise the talented in mathematics Yahoo! India Matrimony: Find your partner online. [Non-text...
2 May 27, 2004
2:37 pm

adh_math
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Hi I have a question and I have answer for this question also but I am unable to formulate the solution. There are 25 people which includes children, male and...
4 May 26, 2004
4:48 pm

clooneman
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For which integer(s), n, is (2^n - 1)/n an integer? Nick...
5 May 26, 2004
12:20 pm

clooneman
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Hello, this one seems pretty simple. But I can't find the solution. Help plz..:) the question is.. <The probability of rain on...> the day after the rainy day...
2 May 25, 2004
3:52 pm

video_ranger
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