Qik

Qik is a cell phone video streaming site. Robert Scoble has made some interesting videos on his cell phone that are on the site. I like it because it plays so smoothly even though it's cell phone quality. [link]

Easy Problem

You can do this one really fast in your head:

Haretown and Tortoiseville are 40 miles apart. A hare travels at 9 miles per hour from Haretown to Tortoiseville, while a tortoise travels at 1 miles per hour from Tortoiseville to Haretown.

If both set out at the same time, how many miles will the hare have to travel before meeting the tortoise en route?

Link

Answer in Comments

Math Proofs

I'm reading this book called Nature's Numbers by Ian Stewart and came across an interesting way to look at proofs.

Maybe you know the game, but at school in English we play this game where you start out with one word and try to make it another word by changing 1 letter at a time which will make an actual new word until you get to the word you're trying to make. Clear as mud?

Here's the example in the book. Go from SHIP to DOCK...

SHIP
SLIP
SLOP
SLOT
SOOT
LOOT
LOOK
LOCK
DOCK

I used to think of this as a word game but it's really a proof for changing ship into dock by making one letter changes and creating real words along the way. Mathematical!

Cool Birthday Puzzle

Test your arithmetic skills with this series of calculations:

Write the number of the month in which you were born.
Multiply by 4.
Add 13.
Multiply by 25.
Subtract 200.
Add the day of the month you were born.
Multiply by 2.
Subtract 40.
Multiply by 50.
Add the last two digits of the year you were born.
Subtract 10,500.

If you made no mistakes, the answer should give your birthday in mmddyy format. Now test your algebra skills:

Can you explain why this works?

It worked for me..when I figure out how it works, I'll post a comment.
have a go at it!

you can probably find the answer by following this source link

Worlds Hardest Easy Geometry Problem

Can sombody please help me out with this. I got it after hours of work a few months ago but now I can't seem to figure it out. You have to find x but you can't without drawing more lines. Also, you can't use trig. Here's the link to the source website: link