posted
This has nothing to do with car audio but here it goes. Think about the number of possible phone # that the US phone system can have. Area code digit 1 can only have 2-9 digit 2 can only have 0-9 digit 3 can only have 0-9 Prefix digit 1 can only be 2-9 the rest can be the 0-9 can't have area code or prefix of 911 or 411 can't have area code or prefix of 555 Considering all the above how many phone # can the US have?
By the way I am not crazy just really board and need someone to comfirm my calculations! Any thing that i missed in the rules let me know!!! Later
posted
Well, there are 9,999,999 possible combinations of our 7 digit phone number. Then, youve 997 different area codes, not including 411 and 911, so you could have 997 different combinations of 9,999,999 for a total of 99,699,999,003 total different combinations of area code/phone numbers, by my guesstimation. Not sure if this is true or not, but looks good on paper. Damn, that's a lot of phone numbers. Imagine, if you will, inserting a number other than "1" for a long distance call, you dial "2", to get on the second phone system also capable of 99,699,999,003 phone numbers! 199,399,998,006 total phone numbers for the phone company to keep track of.... wow... that's a fair amount! Now, if I had just a penny for each one....
------------------ STILL waiting to hear a GOOD pair of HLCD's!!
If it dont fit, force it... if it breaks, it needed to be replaced anyway...
posted
Ok here is how i did it?!? Area Code first: 2-9 for first number 0-9 for second number 0-9 for last number
Prefix: 2-9 for first number 0-9 for secod nubmer 0-9 for last number
0-9 for the rest of the numbers
so you hace it like this: 8 * 10 * 10 * 8 * 10 * 10 * 10000 so this gives you 6.4 billion now subtract the messed up numbers 411, 911, 555 as an area code and prefix: 800001 a peice for area code = 2400003 1001 a peice for prefix = 3003
The number I got was: 6,397,596,994 Did i forget any thing?
[This message has been edited by moneybag (edited 12-22-1999).]
posted
Okay...Audiophyle took into account the possibility of using 0 and 1 as the first digit of the area code and/or prefix. So his answer seems logical. Then Money gave his..but Money...if the last 4 digits can all be 0-9 then you have 10 x 10 x 10 x 10..which is 10,000 instead of 1,000. But I am too tired to work out the whole problem...I'll get back to ya.
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posted
Just a couple of things you missed audiophyle.
There are 8 possibilities for area code position 1, and 10 for positions 2 and 3. Taking into account the 3 area codes we can't use, that gives us 797 different area codes.
For the prefix, there are again 8 possibilities for the 1st position, and 10 for positions 2 and 3. That gives us 800 for the prefix.
The remaining 4 digits have 10 digits each giving a total of 10,000 unique possibilities.
IE: 797 x 800 x 10,000 = 6,376,000,000 unique phone #'s.
I think my logic makes sense. We need a mathematition to confirm
posted
I have to have something to do while whating on the rules and good job Audiophyle, I don't know how long many other people worked on this but i worked on it one and off for a day with one other person!
------------------ 1st Place Outlaw 1000+ USAC World Finals 1999 166.1 "World Record" 1st Place Outlaw Extreme 1001+ USAC World Finals 1999 170.5 "World Record" dB Drag Racing Turn key Event Promoter www.moneybag.net
posted
It's fair to say that the north american people need their phones. Also, there appears to be a limit to how many phones can be in operation within a certain area, say, ten square feet. Any closer than that and people will be killing each other out of frustration of not being able to hear the person on the other end of the phone.After all, we kill each other for less. Now figure out the sq ft of habitable america, do the math, and that is all the numbers we will ever need. Now factor in the number of people who die each day from not paying attention while driving 'cause they're yapping on the cell phone, subtract, now factor in the number of dead batteries in phones, subtract, multiply, divide, add, sqare root, cosine this and that, ------ I have too much spare time on my hands!
Posts: 7 | From: Chilliwack | Registered: Nov 1999
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