Divisibility Test

0 & 1 - All numbers are divisible by 0 and 1.

2 - The number ends in 0, 2, 4, 6, or 8

3462350971235735692 <- Divisible by 2

3 - The sum of all the digits is divisible by 3.

27336 = 2 + 7 + 3 + 3 + 6 = 21/3 = 7 <- Divisible by 3

4 - The last two digits are divisible by 4.

324154123451251324536 = 36/4 = 9 <- Divisible by 4

5 - The number ends in 0 or 5.

1237456918723455 <- Divisible by 5

6 - Use the rules for 2 and 3. If it ends in 0, 2, 4, 6, or 8 and the sum of the digits is divisible by three then so is it.

542718 = 27/3 = 9, and ends in 8 <- Divisible by 6

7 - 1 * 1s digit + 3 * 10s digit + 2 * 100s digit - 1 * 1000s digit - 3 * 10000s digit - 2 * 100000s digit + 1 * 1000000s digit ... If the sum is divisible by 7 then so is the number. The pattern is multiply each digit starting at 1s by 1,3,2,1,3,2,1,3,2 in order, alternating +, -, +, ... for each group of 132.

7108402 = +(1*2)+(3*0)+(2*4)-(1*8)-(3*0)-(2*1)+(1*7) = 7 <- Divisible by 7

8 - If the hundreds digit is even, check if the last two digits are a multiple of 8.
- If the hundreds digit is odd, check if the last two digits are a multiple of 4 but not 8.

12341361345123515832 - 8 = even - 32/8 = 4 <- Divisible by 8
6234512346312 - 3 = odd - 12/4 = 3, 12/8 = 1.5 <- Divisible by 8

9 - The sum of the digits are divisible by 9

819 = 8 + 1 + 9 = 18/9 = 2 <- Divisible by 9

10 - The last digit is 0.

18947091235698762530 <- divisible by 10

11 - Formulate the digits in reverse order alternating - and + starting with -. If the sum is divisible by 11 so is the number. Also if the number is an odd numbered palindrome with a central even digit the number is divisible by 11.
913891 = 1 - 9 + 8 - 3 + 1 - 9 = -11 <- Divisible by 11
123456787654321 < Divisible by 11

Keep watching MTV because they care about the environment.

I'm glad to see that MTV cares about our environment no matter how far it is from their home base.  I guess MTV decided to record an episode of their Road Rules show (premiering September 17th) on a isolated beach in Panama (No it's not really filmed on a deserted island as they claim in the show.)  But here's a glimpse of how MTV and their environmentally friendly/green stance leaves a pristine beach when they're finished.

This makes me fuking sick!!  I hope those at MTV who were involved in this mess choke on a fish bone!

Tires, donuts of death!

A 20/20 investigation found some interesting facts about new tires. It turns out that Automakers have been warning consumers for ever about death donuts. Older tires (over 6 years old) can become brittle and crack even if they've never been driven on. So, next time you're in the market for new tires check them out. Look for a three or four digit number (DOT code) in an oval on one of the side walls of the tire. They will look like this...



If the number is three digit, the first two number are the week in which the tire was manufactured and the last digit is the year in the 90's. So 414 as seen above was manufactured in the 41st week of 1994, making this tire 14 years old. If the number is 4 digits it was manufactured in the 2000's. So 2402 from above was manufactured in the 24th week of 2002.

Before you purchase any tires ask the vendor if you can look at the tires and check their age. Don't take no for an answer. If they won't allow it take your business elsewhere. In my opinion if the tires are more then a year old, do not purchase them. If they are more then 6 years old, make it known to the vendor and seek tires elsewhere. According to 20/20 the largest offenders they found were Sears and Walmart.

Here's the 20/20 video if you'd like to watch it.

Has the Large Hadron Collider destroied the world yet?

Has the Large Hadron Collider destroied the world yet?

Republican National Convention in a minute

In a minute!

State of Power...

To believe that everyone should think and believe like you is immature and very Hitleresque. We all have different values in our life, sooner or later those values begin to clash. Right now we solve it by proving whose right and oppressing the values of whose wrong. But wouldn't it be nice if we could move where the local values fit more like our own, while still remaining under the same system? That way, if you're for marijuana, you won't get upset when your neighbor sits on his front porch smoking a big fatty.

Don't forget, America is built on the idea of freedom, not the oppression of he who is wrong.