Weird number trick
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Re: Weird number trick
Originally Posted by dbeast420
Using some basic algebra where X is the first 3 digits of your phone number and Y is the last 4
( ( (X*80) + 1 ) * 250 ) + Y + Y - 250) /2
Which can simplify to
(20000*X + 250 + 2Y - 250) /2
Which simplifies to
(20000*X + 2Y) /2
Which is eqivalent to
10000*X + Y
So if you scale the first 3 digits of your phone number by 1000 and add the last 3 digits, you get the same thing
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Re: Weird number trick
Originally Posted by 1995BvSSE
Originally Posted by dbeast420
Using some basic algebra where X is the first 3 digits of your phone number and Y is the last 4
( ( (X*80) + 1 ) * 250 ) + Y + Y - 250) /2
Which can simplify to
(20000*X + 250 + 2Y - 250) /2
Which simplifies to
(20000*X + 2Y) /2
Which is eqivalent to
10000*X + Y
So if you scale the first 3 digits of your phone number by 1000 and add the last 3 digits, you get the same thing
Dang you're good.
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Re: Weird number trick
LOL, can you tell I spent 10 1/2 hours doing engineering work today? I didn't even have to THINK about this, it became a reflex. I think I need a vacation
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Re: Weird number trick
Originally Posted by 1995BvSSE
LOL, can you tell I spent 10 1/2 hours doing engineering work today? I didn't even have to THINK about this, it became a reflex. I think I need a vacation
Oh, wait, thats me.....
:P
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Re: Weird number trick
Originally Posted by Puddy46
Originally Posted by 1995BvSSE
LOL, can you tell I spent 10 1/2 hours doing engineering work today? I didn't even have to THINK about this, it became a reflex. I think I need a vacation
Oh, wait, thats me.....
:P
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Re: Weird number trick
Originally Posted by 1995BvSSE
Originally Posted by Puddy46
Originally Posted by 1995BvSSE
LOL, can you tell I spent 10 1/2 hours doing engineering work today? I didn't even have to THINK about this, it became a reflex. I think I need a vacation
Oh, wait, thats me.....
:P
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Re: Weird number trick
Originally Posted by 1995BvSSE
Originally Posted by dbeast420
Using some basic algebra where X is the first 3 digits of your phone number and Y is the last 4
( ( (X*80) + 1 ) * 250 ) + Y + Y - 250) /2
Which can simplify to
(20000*X + 250 + 2Y - 250) /2
Which simplifies to
(20000*X + 2Y) /2
Which is eqivalent to
10000*X + Y
So if you scale the first 3 digits of your phone number by 1000 and add the last 3 digits, you get the same thing
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Re: Weird number trick
Originally Posted by LakevilleSSEi
Originally Posted by 1995BvSSE
Originally Posted by dbeast420
Using some basic algebra where X is the first 3 digits of your phone number and Y is the last 4
( ( (X*80) + 1 ) * 250 ) + Y + Y - 250) /2
Which can simplify to
(20000*X + 250 + 2Y - 250) /2
Which simplifies to
(20000*X + 2Y) /2
Which is eqivalent to
10000*X + Y
So if you scale the first 3 digits of your phone number by 1000 and add the last 3 digits, you get the same thing
Dang you're good.
#10
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yeah, my wife looked at a similar one (using the year you're born) and was shocked...
so I did the same thing - I took her through the math of the whole thing, and she just looked at me. you know, that look that engineers get all the time from people who aren't, after we've described something that they don't understand?
that look.
so I did the same thing - I took her through the math of the whole thing, and she just looked at me. you know, that look that engineers get all the time from people who aren't, after we've described something that they don't understand?
that look.
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