I've never seen this

[jimmyf]

Figure this one out!!!!

1. Key into the calculator the first 3 digits of your phone number
(not area code).

2. Multiply by 80

3. Add 1

4. Multiply by 250

5. Add last 4 digits of your phone number

6. Add last 4 digits of your phone number AGAIN

7. Subtract 250

8. Lastly, divide by 2

Is this your phone number???

[Peaches]

Originally posted by jimmyf@Feb 9 2004, 06:26 PM
Figure this one out!!!!

1. Key into the calculator the first 3 digits of your phone number
(not area code).

2. Multiply by 80

3. Add 1

4. Multiply by 250

5. Add last 4 digits of your phone number

6. Add last 4 digits of your phone number AGAIN

7. Subtract 250

8. Lastly, divide by 2

Is this your phone number???
I totally suck at math, but even I can see that since you're putting in your phone number, it makes perfect sense that adding, subtracting, etc. some other numbers can easily give you your phone number. :P

[dantheman]

worked for me, pretty cool.

I hate math :ph34r:

[XXXPhoto]

Originally posted by Peaches+Feb 9 2004, 02:31 PM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Peaches @ Feb 9 2004, 02:31 PM)</td></tr><tr><td id='QUOTE'><!--QuoteBegin--jimmyf@Feb 9 2004, 06:26 PM
Figure this one out!!!!

1. Key into the calculator the first 3 digits of your phone number
(not area code).

2. Multiply by 80

3. Add 1

4. Multiply by 250

5. Add last 4 digits of your phone number

6. Add last 4 digits of your phone number AGAIN

7. Subtract 250

8. Lastly, divide by 2

Is this your phone number???
I totally suck at math, but even I can see that since you're putting in your phone number, it makes perfect sense that adding, subtracting, etc. some other numbers can easily give you your phone number. :P[/b][/quote]
Indeed... If you watch what it's doing, it's just moving first 3 digits over 4 places then inserting last 4.

1. easy enough
2/3. first 3 digits are 80x value, plus an 'extra' 1
4. first 3 digits are now 20000x value, basically 2x (doubled) with proper zeros added for place holders, plus and 'extra' 250 of course.
5. adding in last 4, still have above
6. adding in last 4 again makes it 2x (doubled) just like the first 3 digits, with extra 250 of course.
7. you get rid of the extra 250 and are left with your phone number doubled.
8. take half, you get your phone number.

((((80x)+1)250)+2y-250)/2
(20000x + 250 + 2y -250)/2
10000x + y = your phone number when x is first 3 digits and y is last 4

PS, I'm sure Colin could have done explaination better... lol

[Almighty Colin]

I did the same thing as xxxphoto but wrote out all the steps. The steps are to the right of the calculation. It's easy to follow. Peaches?

xxx is the first 3 digits of phone number
yyyy is the last 4 digits of phone number

1. xxx Key into the calculator the first 3 digits of your phone number
2. 80xxx Multiply by 80
3. 80xxx+1 Add 1
4. 250*(80xxx+1) Multiply by 250
5. 250*(80xxx+1)+yyyy Add last 4 digits of your phone number
6. 250*(80xxx+1)+2yyyy Add last 4 digits of your phone number AGAIN
250*80xxx + 250 + 2yyyy (simple step. multiply out the 250 now for bookkeeping as we know we need to subtract that 250 next step)
7. 250*80xxx+2yyyy Subtract 250
8. 125*80xxx+yyyy Lastly, divide by 2
=10,000xxx+yyyy (Then just multiply the 125 and the 80 so you can see what the answer looks like)

And of course 10,000xxx+yyyy is your phone number. You need the 10,000 as a placeholder just like 27 is 10*2+7.

8675309 is really 10,000*867+5309.

This trick wouldn't work in ancient Rome. They didn't have a base 10 placeholding number system with a zero. You can probably thank the Arabs.



Last edited by Colin at Feb 10 2004, 06:27 AM

[Playful Melissa]

Who says you don't use algebra in real life?

[Gunni]

Pretty long way to find out somthing you already know :)

[Almighty Colin]

Originally posted by Gunni@Feb 10 2004, 08:50 AM
Pretty long way to find out somthing you already know :)
Mmm ... Only took about 30 seconds. You can just write out the final equation like xxxphoto did.

[Gunni]

645428690, took me 2 seconds :awinky:

Neat trick though, maths are pretty cool, looks complicated to the untrained eye, but it is pretty simple I know. I'll see if I can't dig up a few more of these, remember one that had something to do with you age that was pretty cool :)

[pornomatic]

anybody a calculator?

[Almighty Colin]

Originally posted by pornomatic@Feb 10 2004, 10:54 AM
anybody a calculator?
anybody a english?

[Buff]

Ok, I promise you this one will freak you out! You are not going to believe this!

1) Pick ANY number (decimal, fraction, integer, doesn't matter)
2) Put the number into this formula as the variable y:

x^y=[3(xy^2)^2/y]/y^3/xy[y^x/x^x^y(x^y^y)]^x(y^x)

3) solve for x
4) divide x by zero
5) that number is the inverse of the converse of the sum of the square roots of pi divided by some other number I can't tell you.

Cool, huh?

[Almighty Colin]

Originally posted by Buff@Feb 10 2004, 11:03 AM

5) that number is the inverse of the converse of the sum of the square roots of pi divided by some other number I can't tell you.

Cool, huh?
The sum of the square roots of pi is 0. There's a negative square root and a positive square root. That number divided by a number you can't tell us is 0.

I don't know much logic but the converse requires a conditional statement and I don't see one.

[Carrie]

Originally posted by Colin+Feb 10 2004, 11:37 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Colin @ Feb 10 2004, 11:37 AM)</td></tr><tr><td id='QUOTE'><!--QuoteBegin--Buff@Feb 10 2004, 11:03 AM

5) that number is the inverse of the converse of the sum of the square roots of pi divided by some other number I can't tell you.

Cool, huh?
The sum of the square roots of pi is 0. There's a negative square root and a positive square root. That number divided by a number you can't tell us is 0.

I don't know much logic but the converse requires a conditional statement and I don't see one.[/b][/quote]
It's hard to make a math funny with Colin around :D

[Buff]

Originally posted by Carrie+Feb 10 2004, 10:41 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Carrie @ Feb 10 2004, 10:41 AM)</td></tr><tr><td id='QUOTE'>Originally posted by -Colin@Feb 10 2004, 11:37 AM
<!--QuoteBegin--Buff@Feb 10 2004, 11:03 AM

5) that number is the inverse of the converse of the sum of the square roots of pi divided by some other number I can't tell you.

Cool, huh?
The sum of the square roots of pi is 0. There's a negative square root and a positive square root. That number divided by a number you can't tell us is 0.

I don't know much logic but the converse requires a conditional statement and I don't see one.
It's hard to make a math funny with Colin around :D[/b][/quote]
Yeah, fuck you, Colin.

[Almighty Colin]

Originally posted by Buff+Feb 10 2004, 11:42 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Buff @ Feb 10 2004, 11:42 AM)</td></tr><tr><td id='QUOTE'>Originally posted by -Carrie@Feb 10 2004, 10:41 AM
Originally posted by -Colin@Feb 10 2004, 11:37 AM
<!--QuoteBegin--Buff@Feb 10 2004, 11:03 AM

5) that number is the inverse of the converse of the sum of the square roots of pi divided by some other number I can't tell you.

Cool, huh?
The sum of the square roots of pi is 0. There's a negative square root and a positive square root. That number divided by a number you can't tell us is 0.

I don't know much logic but the converse requires a conditional statement and I don't see one.
It's hard to make a math funny with Colin around :D
Yeah, fuck you, Colin.[/b][/quote]
Oh

[Buff]

Originally posted by Colin+Feb 10 2004, 10:43 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Colin @ Feb 10 2004, 10:43 AM)</td></tr><tr><td id='QUOTE'>Originally posted by -Buff@Feb 10 2004, 11:42 AM
Originally posted by -Carrie@Feb 10 2004, 10:41 AM
Originally posted by -Colin@Feb 10 2004, 11:37 AM
<!--QuoteBegin--Buff@Feb 10 2004, 11:03 AM

5) that number is the inverse of the converse of the sum of the square roots of pi divided by some other number I can't tell you.

Cool, huh?
The sum of the square roots of pi is 0. There's a negative square root and a positive square root. That number divided by a number you can't tell us is 0.

I don't know much logic but the converse requires a conditional statement and I don't see one.
It's hard to make a math funny with Colin around :D
Yeah, fuck you, Colin.
Oh[/b][/quote]
If a chicken and 1/2 can lay an egg and 1/2 in a day and 1/2, how many chickens does it take to lay one egg in a year, on leap year, not including weekends or MLK day, if the year is 1772?

[Vick]

Originally posted by Colin@Feb 10 2004, 06:24 AM
I did the same thing as xxxphoto but wrote out all the steps. The steps are to the right of the calculation. It's easy to follow. Peaches?

xxx is the first 3 digits of phone number
yyyy is the last 4 digits of phone number

1. xxx Key into the calculator the first 3 digits of your phone number
2. 80xxx Multiply by 80
3. 80xxx+1 Add 1
4. 250*(80xxx+1) Multiply by 250
5. 250*(80xxx+1)+yyyy Add last 4 digits of your phone number
6. 250*(80xxx+1)+2yyyy Add last 4 digits of your phone number AGAIN
250*80xxx + 250 + 2yyyy (simple step. multiply out the 250 now for bookkeeping as we know we need to subtract that 250 next step)
7. 250*80xxx+2yyyy Subtract 250
8. 125*80xxx+yyyy Lastly, divide by 2
=10,000xxx+yyyy (Then just multiply the 125 and the 80 so you can see what the answer looks like)

And of course 10,000xxx+yyyy is your phone number. You need the 10,000 as a placeholder just like 27 is 10*2+7.

8675309 is really 10,000*867+5309.

This trick wouldn't work in ancient Rome. They didn't have a base 10 placeholding number system with a zero. You can probably thank the Arabs.
Jenny, Jenny who can I turn to

[TheEnforcer]

Damn, why yes it is by golly! :huh:

[TheEnforcer]

Originally posted by Carrie+Feb 10 2004, 11:41 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Carrie @ Feb 10 2004, 11:41 AM)</td></tr><tr><td id='QUOTE'>Originally posted by -Colin@Feb 10 2004, 11:37 AM
<!--QuoteBegin--Buff@Feb 10 2004, 11:03 AM

5) that number is the inverse of the converse of the sum of the square roots of pi divided by some other number I can't tell you.

Cool, huh?
The sum of the square roots of pi is 0. There's a negative square root and a positive square root. That number divided by a number you can't tell us is 0.

I don't know much logic but the converse requires a conditional statement and I don't see one.
It's hard to make a math funny with Colin around :D[/b][/quote]
:lol:

[SykkBoy]

When I was in Calc in high school, we had a unit on number games and tricks like this one.

Part of our unit test was to create puzzles/tricks like this one. It was fun and great way to sharpen your basic math skills (and annoy the fuck out of fellow classmates ;-))



Last edited by SykkBoy at Feb 10 2004, 01:53 PM

[Playful Melissa]

Originally posted by SykkBoy@Feb 10 2004, 02:53 PM
When I was in Calc in high school, we had a unit on number games and tricks like this one.

Part of our unit test was to create puzzles/tricks like this one. It was fun and great way to sharpen your basic math skills (and annoy the fuck out of fellow classmates ;-))
Wow SykkBoy you remember High School? I don't remember college!!

or is that kinda like "One time at band camp?"

Sorry SykkBoy - I just couldn't resist :)

[Almighty Colin]

Originally posted by SykkBoy@Feb 10 2004, 01:53 PM
When I was in Calc in high school, we had a unit on number games and tricks like this one.

Part of our unit test was to create puzzles/tricks like this one. It was fun and great way to sharpen your basic math skills (and annoy the fuck out of fellow classmates ;-))
Did you have any time left over for Calculus? ;-)