Interesting - Printable Version

Interesting - Printable Version

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Interesting - Rooner - 04-13-2004

You may have seen this.

Here is a math trick so unbelievable that it will stump you.
Personally I would like to know who came up with this and why that
person is not running the country.

1. Grab a calculator. (you won't be able to do this one in your head)
2. Key in the first three digits of your phone number (NOT the area
code)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again.
8. Subtract 250
9. Divide number by 2

Do you recognize the answer?

Interesting - header - 04-13-2004

This is what kids from MIT do at midnight on Easter Sunday.

Interesting - Rooner - 04-13-2004

Quote:Originally posted by header
This is what kids from MIT do at midnight on Easter Sunday.

Tis surely not what 19 year old French/Italian girls do at midnight on Easter Sunday.

Interesting - Topper Harley - 04-13-2004

Quote:Originally posted by Rooner

Quote:Originally posted by header
This is what kids from MIT do at midnight on Easter Sunday.

Tis surely not what 19 year old French/Italian girls do at midnight on Easter Sunday.

Interesting - Black Lazerus - 04-13-2004

Quote:6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again.

9.Divide number by 2

Mental midgets

Interesting - Rooner - 04-13-2004

Im hurt Laz.

Interesting - Sloats - 04-13-2004

x = 3 digit
y = 4 digit

[(80 x + 1) * 250 + y + y -250] / 2
(80 x + 1) * 125 + 1/2 y + 1/2 y -125
80 * 125 * x +125 + y -125
10000 * x + y

What's the number supposed to be again?

Interesting - header - 04-13-2004

I think the mistake being made is to think that anyone is in awe that after plugging in partial portions of their phone numbers into an equation that the resulting answer is their entire phone number.

Interesting - Rooner - 04-13-2004

I hate algebra.

Interesting - 60FeetUnderWater - 04-13-2004

so do I.

and THAT is why I think this thread (and the activity prescribed within) is kaka-poopoo.

I did initially wonder at how such an equation was discoverd but then I stopped caring after a few seconds or so.

Because math stinks. Always has, always will.

I hate you mathematics. Die.