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Without using a calculator

  1. Feb 26, 2005 #1
    Can you give the EXACT number of bytes there are in 256 terabytes? If you can, show how you did it.
     
  2. jcsd
  3. Feb 26, 2005 #2
    10000000000 0000000000 0000000000 0000000000 00000000 (in binary) since it is 1024 x 1024 x 1024 x 1024 x 256
     
    Last edited: Feb 26, 2005
  4. Feb 26, 2005 #3

    dextercioby

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    1TB=2^{40}B;256TB=2^{48}B=2^{51}b=2Pb

    Daniel.
     
  5. Feb 27, 2005 #4
    You have to give it in decimals, not in binary otherwise its too easy. Daniel your answer is wrong.
     
  6. Feb 27, 2005 #5

    dextercioby

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    What do you mean:
    256TB=2^{48}B=281474976710656B

    Daniel.
     
  7. Feb 27, 2005 #6
    This sounds sort of like a homework problem. "If you can, show how you did it," said ToxicBug.
     
  8. Feb 27, 2005 #7

    dextercioby

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    To me,it sounds like something really stupid...I don't know why i even bothered to answer...:yuck:

    Daniel.
     
  9. Feb 27, 2005 #8

    BobG

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    I tried just counting up to that number on my fingers and toes, alas I maxed out at 1,048,575. Right now, I have the population of Anchorage, AK working on the problem.

    Oh, please, please hurry before too many fingers and toes fall off from frost bite :frown:
     
  10. Feb 27, 2005 #9
    I just wanted to see if people know the trick for it.

    Its a lot easier than that.

    You take 2^X,Y where X is the units, for example: 0 - bytes, 1 - kilobytes, 4 - terabytes, etc. Then for Y you find the exponent 2^Y for the number. 256 is 2^8, so the answer is 2^48.
     
  11. Feb 27, 2005 #10

    dextercioby

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    And why wasn't my answer right...?BTW,on both posts it coincides with yours...:wink:

    Daniel.
     
  12. Feb 27, 2005 #11

    chroot

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    ToxicBug,

    Exponent notation is not a trick, it's a very normal tool used by almost all mathematicians, engineers, and physicists.

    - Warren
     
  13. Feb 27, 2005 #12

    Gokul43201

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    And how is this a decimal representation ?
     
  14. Mar 1, 2005 #13
    Because its decimal numbers, not binary :rolleyes:
     
  15. Mar 1, 2005 #14

    dextercioby

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    Good point...He probably meant the 15 digit number...BTW,it's called "BASE 10".

    Daniel.
     
  16. Mar 4, 2005 #15
    2^48 without a calculator?
    Wow, i must of been gone way to long. :uhh:
     
  17. Mar 4, 2005 #16

    dextercioby

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    Any one can do it,provided he/she has a piece of papaer and a pencil,so let's not exaggerate...

    Daniel.
     
  18. Mar 4, 2005 #17
    2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 ......... that is a lot of twos. I should be doing something else more productive right about now.
     
  19. Mar 4, 2005 #18
    You would square 1024, square the result, then multiply that by 128.
     
  20. Mar 9, 2005 #19
    I second that.:)
     
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