can anyone give me a very cool math trivia?

Question

i really need this for school.our teacher asked us and i have to know as many math trivias as i can use because i was hoping to joing a math trivia contest. i tried searchin the net but the trivias are not that cool. you know..just normal..i just need help so badly

Answer 1

Imagine you have 3 bottles of water...

1- Capacity of 8 litres.. and it's full of water..
2- Capacity of 5 litres.. and it's empty...
3- Capacity of 3 litres.. and it's empty...

Required: Divide the water in 2 halves each of 4 litres ( put them in the 8 lt. and the 5 lt. bottles )
Don't use anything except the 3 bottles...

Answer 2

Cool Math Trivia

Answer 3

Are you talking about math problems with surprising answers or just interesting stuff related to mathematicians?

I've always thought the life of Evariste Galois was very interesting. He died in a duel at the age of 21, the dispute apparently over a woman. On the last night of his life, he is alleged to spent the entire night feverishly writing down as much as much as he could related to his research into the factorability of polynomials. In other words, he essentially gave up a final night of rest before the fateful encounter, which he believed he was doomed to lose anyway, to compile his research into a difficult area of mathematics. (Many historians dispute the details of this story, and admittedly, it does sound too dramatic to be true.) Galois had, in fact, found the answers to some questions that had gone unsolved for centuries.

There's a lot more to Galois' brief life, and most of it genuinely sucks. So you think YOU have a crummy life? Read about Galois. Here's a good link:

http://scienceworld.wolfram.com/biography/Galois.html

Answer 4

If you have a rope that wraps all the way around the Earth at the equator and you add 6 feet to the length of the rope, how far off the earth will the rope be suspended at any given point.

Answer 5

INteresting sums:

1+2+3+4+.....n = n(n-1)/2
1+3+5+..(2n-1) = n²
1²+2²+3²+...n² = n(n+1)(2n+1)/6
1-(1/3)+(1/5)-(1/7)+(1/9)-(1/11)..... = π/4

etc.


Doug

Answer 6

With 2nd one you divide by a - b well in the first place a = b and so a - b = 0 and this is where technically your maths fails but this is fun to trick the unsuspecting!

Answer 7

Hi. Search on "The Simpsons" and math. Seriously, the folks who write the show are degreed mathematicians and have used Fermat's Last Theorem, etc as gags.

Answer 8

y=x^x^x^x^x ad infinitum
The problem is to find dy/dx
You get foxed to start with. But it is quite simple:Thus
We can write
y=x^y
lny=ylnx
1/y*dy/dx=y*1/x+lnx*dy/dx
dy/dx(1/y-lnx)=y/x
dy/dx=y/x/(1/y+i/lnx)
Do you like this trivia?

Answer 9

e^(pi i) = -1