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Vibhor16

Is there an easy way to mentally calculate 2^n (where n can be any natural no.)?

  • one year ago
  • one year ago

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  1. experimentX
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    memory 1 2 4 8 16 32 64 128 256 512 1024 ...

    • one year ago
  2. shayanreloaded
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    1?

    • one year ago
  3. experimentX
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    2^0

    • one year ago
  4. shayanreloaded
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    0 is not a natural no

    • one year ago
  5. experimentX
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    some include 0 as natural number while some do not http://en.wikipedia.org/wiki/Natural_number

    • one year ago
  6. Vibhor16
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    what about 54,55,56,... you can't just memories them all !

    • one year ago
  7. experimentX
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    lol http://en.wikipedia.org/wiki/Pi#Memorizing_digits

    • one year ago
  8. experimentX
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    the best way is to memorize up to 2^10 ... or 2^something ... then multiply it by two until your you get your result.

    • one year ago
  9. radar
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    Use the calculator \[x ^{y}\] button.

    • one year ago
  10. shayanreloaded
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    why would you ever need 2^54 or something that large?

    • one year ago
  11. experimentX
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    haha ... agree with radar!!

    • one year ago
  12. radar
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    I realize that is not really a "mentally" way, but when you get above 2^7 that would be the way I would do it mentally.

    • one year ago
  13. radar
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    use the tools.

    • one year ago
  14. SMISHRA
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    @experimentX , 0 can not be an element of N.

    • one year ago
  15. experimentX
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    I looked into wikipedia .... it said that 0 is still debated as it is an element of N or not

    • one year ago
  16. experimentX
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    besides ... the question hardly focuses on 0 is a natural number or not ... and i'm in no position to argue that

    • one year ago
  17. satellite73
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    any natural number at all? seems doubtful since this grows very large very fact. but i count on my fingers, doubling each time two four eight sixteen thirty two sixty four one twenty eight two fifty six five twelve ten twenty four it helps to be old an remember when a computer actually came with one twenty eight two fifty six or five twelve megs, so those numbers are familiar.

    • one year ago
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