Cool math problem

[Luv4Pac4Ever]

For those in the US. I don't guess it'll work with international numbers, unless maybe you just use the last 7 digits.


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?




This shit is tight. I tried it with every number I could think of and it worked every time. Any 7 digit phone number should work.

 

[pietro006]

HOLY SHIT worked for me

 

[haunted]

Its a simple trick. I made it up.

 

[mechman]

cool nice trick

 

[Illuminattile]

It's pretty basic maths, when you think about it. Look at the individual steps.

3. Multiply by 80.
5. Multiply by 250
9. Divide number by 2
= Multiply by 10000.

Multiplying by 80, then 250 and then dividing by 2 is the same as mutiplying by 10000.

4. Add 1
5. Multiply by 250
8. Subtract 250
= 0

All you're really doing by adding 1 and multiplying by 250 is adding 250.

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
= Add the last 4 digits of your phone number

So all you're doing is multiplying the first three digits by 10000, then adding the last four digits on the end. Hardly mind blowing.

 

[hizzle?]

this is stupid...you might aswell type your phone number, you will only save time...

 

[Luv4Pac4Ever]

Damn you Illuminattile You could've at least let us think we were doing something extraordinary lol
But you just had to ruin our fun

 

[Steph]

its 9**-****! wow, the magic of calculators

 

[_carmi]

lol cool trick.

 

[Jokerman]

I did it in my head. Here's a pic of my head:

 

[H.E. Pennypacker]

Volattile, even after reading your post, I am still amazed by this. Maybe its because your explanation was too difficult for me to understand.

 

[S. Fourteen]

Yeah man.. I have a massive headache now.

 

[AmerikazMost]

It's pretty basic maths, when you think about it. Look at the individual steps.

3. Multiply by 80.
5. Multiply by 250
9. Divide number by 2
= Multiply by 10000.

Multiplying by 80, then 250 and then dividing by 2 is the same as mutiplying by 10000.

4. Add 1
5. Multiply by 250
8. Subtract 250
= 0

All you're really doing by adding 1 and multiplying by 250 is adding 250.

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
= Add the last 4 digits of your phone number

So all you're doing is multiplying the first three digits by 10000, then adding the last four digits on the end. Hardly mind blowing.

thanks for saving me the trouble :thumb:

 

[2PacThug4Life]

worked for me

 

[2pacnbiggie]

theres no such thing as a cool math problem

 

[Ghetto_Ghost]

oo shit its my phone number

 

[KAMIKAZI]

O shit, I just got Diaz's phone number

 

[Ghetto_Ghost]

^ lmao

 

[Illuminattile]

Volattile, even after reading your post, I am still amazed by this. Maybe its because your explanation was too difficult for me to understand.

For real?

All you're doing is multiplying the first three digits by 10000, which moves them four places to the left, like so:

123 * 10000 = 1230000

Then you're adding on the last four digits, which will obviously give you the full number.

1230000 + 4567 = 1234567

They just split the steps up to confuse you. So instead of multiplying by 10000, you multiply by 250, then by 40 and then divide by 2. Which is the same thing.

 

[imported_MAKaveli_10]

Id never thought I would see a cool math problem but I finally have seen it. Damn thats cool. It worked for me.