Math Trick

1. ## Math Trick

I came across this one on eBaum's World

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
5. Multiply by 250
8. Subtract 250
9. Divide number by 2

2. is it suppose to be ur phone number, cuz it doesn't work.

3. Worked for me, pretty neat

4. works for me

5. Mathematics are pretty cool too bad I dont understand it.

6. Didn't work for me.

7. Now I am going to spend the rest of the day trying to figure out 'the order of operations' and why this works...great...

8. The rest of the day!? Hopefully more like 15 minutes tops.

9. The reason it might not have worked for everyone has to do with how your calculator is programmed. Try it again but press = after every step. It worked for me after I did that.

10. Originally Posted by gordopolis
The rest of the day!? Hopefully more like 15 minutes tops.
lol ... how bout 3 min ok back to

11. Worked for me. You guys must really suck at math!

12. Simple algrebra:

Say the first 3 digits is x, and the last 4 is y. It should be clear that your phone number is 10000x+y. Here is the result of applying your steps:

2. x
3. 80x
4. 80x+1
5. 250(80x+1)=20000x+250
6. 20000x+250+y
7. 20000x+250+2y
8. 20000x+2y
9. 10000x+y

There ya go.

13. ahhhh grade 11 math...them's was good fun...both times

14. worked for me...but math is still gay. lol

15. Originally Posted by docholiday
worked for me...but math is still gay. lol
You're a winner.

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