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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
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
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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
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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.
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.
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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
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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 ;-))
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!!
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? ;-)
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02-09-2004
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