rubberdinghy Posted October 16, 2003 Report Share Posted October 16, 2003 You've got to try this... kind of intriguing, any way to explain this? 1. Key in the first 3 digit of your phone number into the calculator. 2. Multiply by 80. 3. Add 1. 4. Multiply by 250. 5. Plus last 4 digit of your phone number. 6. Plus last 4 digit of your phone number again. 7. Minus 250. 8. Divide by 2 at last. Is this your handy phone number??? Can someone figure out and explain how the arithmetic works?? Asparagus should be able to figure it out! Link to comment Share on other sites More sharing options...
Velvet Posted October 16, 2003 Report Share Posted October 16, 2003 Very cool. I think it has something to do with water displacement. Link to comment Share on other sites More sharing options...
bradm Posted October 16, 2003 Report Share Posted October 16, 2003 Consider your phone # to be two numbers: one of three digits, one of four digits. Call the first number 'x' and second number 'y'. After all the manipulations, you end up with: ((80x + 1)250 + 2y - 250)/2 Expand things out: The first part turns out to be 80x times 250, divided by two, which is 10000. Since x is a three-digit number (say, 123), 10000x is 1230000, a seven-digit number. The only bits left are (250 + 2y - 250)/2 which works out to be 2y/2 (since the two 250s cancel out), which is y. Since y was a four-digit number (say, 4567), adding that back in to the (now) seven-digit number would give 1234567. Piece o' cake. Aloha, Brad Link to comment Share on other sites More sharing options...
mister slippery Posted October 16, 2003 Report Share Posted October 16, 2003 a - cool. b - cool explanation. c - must be stupid, not my phone number, dont mathematicize well. Link to comment Share on other sites More sharing options...
rubberdinghy Posted October 16, 2003 Author Report Share Posted October 16, 2003 I hate math, however people who can figure out that kind of stuff amaze me! Link to comment Share on other sites More sharing options...
bouche Posted October 16, 2003 Report Share Posted October 16, 2003 I want a second opinion. Where's Asparagus? Frikken hocus pocus! Just follow the instructions below: DON'T scroll down too fast. Do it slowly and follow the instructions below exactly, do the math in your head as fast as you can. It may help to say the answers aloud quietly. FOLLOW these instructions one at a time and as QUICKLY as you can! What is: 2+2? 4+4? 8+8? 16+16? Quick! Pick a number between 12 and 5. Got it? Now scroll down... The number you picked was 7, right? Link to comment Share on other sites More sharing options...
snarfmaster C Posted October 16, 2003 Report Share Posted October 16, 2003 no. Link to comment Share on other sites More sharing options...
bONES Posted October 17, 2003 Report Share Posted October 17, 2003 quote: The number you picked was 7, right? YES! Link to comment Share on other sites More sharing options...
secondtube Posted October 17, 2003 Report Share Posted October 17, 2003 most will think 7 because you brain equates the 7 and 5 to equal 12. i actually thought 8. Link to comment Share on other sites More sharing options...
rubberdinghy Posted October 18, 2003 Author Report Share Posted October 18, 2003 Listen Ram-tek...am I gonna have to come over there? Link to comment Share on other sites More sharing options...
bONES Posted October 18, 2003 Report Share Posted October 18, 2003 quote: NB: phone number trick doesn't work if your last 4 numbers start with a 0. (ex: 0959) oh well, thanks for nothing dinghy!! umm, yes it does! Link to comment Share on other sites More sharing options...
moe.ron Posted October 18, 2003 Report Share Posted October 18, 2003 NB: phone number trick doesn't work if your last 4 numbers start with a 0. (ex: 0959) oh well, thanks for nothing dinghy!! Link to comment Share on other sites More sharing options...
moe.ron Posted October 19, 2003 Report Share Posted October 19, 2003 oh ya...it does. My appologies ding-myester. Cool trick! Link to comment Share on other sites More sharing options...
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