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Old 05-15-2014, 01:26 PM   #1
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Brain Teaser

Who can tell me why this is possible? Put on your mathematic thinking caps, kids. Oh, and P.A.G., if you're watching, you can't answer. And, this is a true mathematical statement. If you know how to find the correct answer, explain it to those who don't. I learned how to do this back in 1975.

Brain teaser for the day.


11101 +11011 = 111000

Bob Flowers

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Old 05-15-2014, 02:28 PM   #2
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The equation is in binary (powers of 2) notation. In binary addition 0+0=0, 0+1=1,
1+1=10 in other words, a 0 with a 1 carried to the next column.
11101 +
11011
--------
111000 starting from the right 1+1=10, so it is 0 and carry the 1 to the left just like regular addition. Next column,0+1+1carried is10 so again it is 0 and carry the 1 to the left.in the third column 1+0+1 carried is 10 so it is 0 and carry the 1 to the left. Next column 1+1+1carried is 11, so 1 and carry the one. In the left hand column,1+1+1 carried is 11
Therefore the answer is 111000 QED.

This was typed by my brainy husband, not me!!
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Old 05-15-2014, 02:39 PM   #3
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Yup, binary.
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Old 05-15-2014, 02:46 PM   #4
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All I know is binary=brainy.
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Old 05-15-2014, 03:58 PM   #5
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I understand the principle, but it gives me a headache.
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Old 05-15-2014, 05:33 PM   #6
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I'm with Z!

I started my life as an accountant and we didn't go in for that goofy math!

Then I fell in with a bunch of computer geeks and they tried to teach me that binary stuff, they failed!
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Old 05-15-2014, 05:50 PM   #7
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Intellectually curious but of no practical use to anyone other than computer science teachers.
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Old 05-15-2014, 05:54 PM   #8
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Quote:
Originally Posted by Andy M. View Post
Intellectually curious but of no practical use to anyone other than computer science teachers.
And programmers, especially the ones who do the low level programming. (Machine language and stuff close to machine language)
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Old 05-15-2014, 07:43 PM   #9
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Quote:
Originally Posted by taxlady View Post
And programmers, especially the ones who do the low level programming. (Machine language and stuff close to machine language)
Hexedecimal gets even crazier.

Next geeky question; Why is binary coded octal an integral part of most machine language, and assembly language code? And, what is binary coded octal. Give an example.

Seeeeeeya; Chief Longwind of the North
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Old 05-15-2014, 07:47 PM   #10
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Now you're making it sound like homework.
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