Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#4226 Re: This is Cool » Math *IS* Fun » 2006-07-29 07:48:44

Interesting pictures. Took me a while to decipher. Thought it was written in some kind of code - Silly me. Nice images though, ryos. ^_^

#4227 This is Cool » Mathematical News » 2006-07-29 07:44:12

Devantè
Replies: 5

http://www.topix.net/science/mathematics

Some mathematical news for those that are bored. Most of it is about famous mathematicians and mathematics across the country. However, a good majority of the site offers education (in general worldwide mathematical sense) about present mathematicians, and those that are deceased (they shall be missed sad ). Some interesting news there, I haven't found another website like this yet. Some of it may not be suitable for young children, though (well I could be wrong). Some of it is rather dull, but then again, maths is fun when you want it to be fun.

#4228 Re: This is Cool » Help those in need of friends. » 2006-07-29 07:37:25

Sounds quite good, and worthwhile, as MathsIsFun stated. How exactly does this work, and where can we go to access more information on this subject? I am eager to learn more, as you rarely get this kind of thing (or so I am told).

#4229 Re: This is Cool » Our common ancestor lived just a few thousand years ago ... » 2006-07-29 07:00:37

The link doesn't work for me. Maybe seeing as it is news and it is 25 days old? :\

Sounds interesting though. Maybe I can research this elsewhere.

#4230 Re: Puzzles and Games » Nerd Search » 2006-07-29 06:57:13

This could be published in books - Nowadays they don't publish as many math puzzles in books as t hey used to! With the exception os Sudoku, of course.

Anyway, I can imagine it...Issue 17, NerdSearch. A nice image and a catchy slogan (optional) on the front and I think it would sell! Maybe MathsIsFun could publish a book with NerdSearch puzzles in it, and possibly some variations?

It's all a dream, but it does seem possible.

#4231 Re: This is Cool » Pi to a Million Decimal Places! » 2006-07-29 06:44:07

Just out of interest - Has anyone come up with or composed a piece of music relative to pi? Many have tried for a way to remember it by music. The music sounds like absolute nonsense when you think of it as B A C A C# F....(and so on). B A C A C# F = 3.14159

So, has anyone come up with a piece of music relative to pi?

#4232 Re: Guestbook » do ? » 2006-07-27 08:20:20

I hate myspace - I use the cheapest domain possible. But most of the time, I use free .com domains that come with 1 or more MySQL Databases, POP3 accounts and at least 1 FTP account. Oh, and PHP/HTML scripting. I don't mind ads, as long as the pixels don't take up too much of my space. Those are hard to find. >_>

EDIT: Wait a minute, I'm talking about the wrong thing! sad

#4233 Re: Guestbook » nothing much » 2006-07-27 08:10:31

Yeah, the restrictions and limitations of computer usage should be reduced immensely...if not, I foresee a long list of complaints from students!

#4234 Re: Dark Discussions at Cafe Infinity » What is your favorite Math(s) related game? » 2006-07-26 20:26:21

Yeah, MathsIsFun's Sudoku puzzles are quite good. Fun to solve! smile

#4236 Re: Puzzles and Games » Sudoku Puzzle Variants » 2006-07-26 19:16:10

SudoKoach - ftp://kmrconsulting.com/sudokoach/sudokoach.zip

Excellent for Sudoku-ers. From Very Easy to Impossibly Hard...

#4237 Re: Maths Is Fun - Suggestions and Comments » Test your coin skills » 2006-07-26 18:10:21

Nice detailing! A job well done.

This is quite useful for people who are saving up for things, and for practice on money problems. It pretty good! smile

#4238 Re: Puzzles and Games » Lightforce Puzzle Site » 2006-07-26 07:49:47

Yeah, I used to play his games a few years back, from PhpbbAmod. There are some nice math/logic-type games there. smile

#4239 Re: Exercises » About the Exercises » 2006-07-26 04:22:43

Just posted an excercise on probability.

I might post some topics on histogram excercises and sampling excercises when I get the time.

#4240 Exercises » Basic Probability » 2006-07-26 04:20:16

Devantè
Replies: 3

Basic Probability Excercises

Basic probability, as the title states. There are quite fun to do. Have fun!

1. Two dice are rolled. The events 'obtaining a six with the first die' and 'obtaining an even number with the second die' are independent. True or False?
2. A box contains 7 red balls and 4 white balls. Two balls are taken out and not replaced. The events 'the first ball is red' and 'the second ball is white' are independent. True or False?
3. A bag contains 3 green counters and 6 black counters. A counter is taken from the bag, its colour noted, and then replaced. A second counter is then taken from the bag. The events 'the first counter is green' and 'the second counter is black' are independent. True or False?

A bag contains 2 red beads and 3 black beads. Two beads are taken from the bag without replacement.

probtreeui7.png

Please enter your answer as a decimal as illustrated in the diagram.

4. P = ?
5. Q = ?
6. R = ?
7. S = ?
8. What is the probability that both beads are the same colour?
9. What is the probability of obtaining exactly one red bead?
10. What is the probability of obtaining at least one red bead?
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#4241 Re: Puzzles and Games » Devanté's Riddle House » 2006-07-26 03:55:16

(BTW, there's always more riddles to discuss on page 1! smile )

#4242 Re: Guestbook » Please Try My Math Game » 2006-07-26 03:53:12

Nice program, good interface. Maybe add subtraction and division? Or maybe using those four operations with 3 numbers or more?

On the whole, it's pretty good.

#4243 Re: Puzzles and Games » Devanté's Riddle House » 2006-07-26 03:49:02

Maybe we could try and solve the riddles I posted on page 1? smile

#4246 Re: Maths Is Fun - Suggestions and Comments » A new section? » 2006-07-25 19:31:06

Brainiating Brainstorm? tongue

I tried for good alliteration and failed...

#4248 Re: Jai Ganesh's Puzzles » Brain Teasers » 2006-07-25 06:46:14

Sorry, meant 45a and 45b instead of 42a and 42b...

#4249 Re: Exercises » Basic Percentages » 2006-07-25 06:28:48

http://www.mathsisfun.com/percentage.html - Some good explanations.

The questions are still hanging in the air, BTW!

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