## Friday, October 28, 2005

### Marvelous or Is It?

I wonder have you ever got this e-mail or SMS before:

1)key-in the first 3 digit of your handphone number(not the 01x number) into the calculator

2) multiply by 80

4) multiply by 250

5) plus last four digit of phone number

6) plus last four digit of phone number again

7) minus 250

8) divide by 2 at last

I took one look at this equation and immediately see a really stupid calculation. The dead giveaway, lines 3 and 4 with 7. It's practically saying, add 250 then minus 250. Sheer stupidity. Basically, this calculation merely asks you to multiply your first three numbers with 10000, then add your last four numbers. Of course that will work! How I got the conclusion? Consider this calculation:

Let's name the first three numbers of your cell phone as x and the last four digits as y. So it says multiply by 80, so you'll get 80x.

Add 1 and you get the equation 80x +1 = ?. Next, it says multiply by 250. 250 multiply by 80 would be 20000, therefore the equation would now be

20000x + 250 = ?.

Adding the last four digit numbers of your handphone twice would equate to 2y. So, the equation now looks like this:

20000x + 250 +2y = ?

The dead giveaway line was up next so it now looks like the following:

20000x + 250 - 250 + 2y =?

20000x + 2y = ?

Continuing on:

(20000x + 2y)/2 = ?

and voila:

10000x + y = your cell phone number!

Man, whoever thought of this must have way too much free time.