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Vibhor16

  • 2 years ago

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

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

  2. shayanreloaded
    • 2 years ago
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    1?

  3. experimentX
    • 2 years ago
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    2^0

  4. shayanreloaded
    • 2 years ago
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    0 is not a natural no

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

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

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

  8. experimentX
    • 2 years ago
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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.

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

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

  11. experimentX
    • 2 years ago
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    haha ... agree with radar!!

  12. radar
    • 2 years ago
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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.

  13. radar
    • 2 years ago
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    use the tools.

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

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

  16. experimentX
    • 2 years ago
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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

  17. satellite73
    • 2 years ago
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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.

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