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Magic tricks using Mathematics

Discussion in 'Tech, Gadgets & Science Forum' started by Good Guy, Dec 28, 2010.

  1. Good Guy

    Good Guy JF-Expert Member

    #1
    Dec 28, 2010
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    Hey i know these tricks that uses the knowledge of mathematics and i thought i would show you.
    .
    .

    Think of a number from 2 to 9.Multiply it by 9.Add the two digits found in the answer.Subtract the answer by 5 and ablakadabla your answer is 4.
    How abt this one.
    Think of any number xcept 0.Add it by it self.Multiply the answer by 3.Divide the obtained answer by the number you initialy thought of and Ablakadabla your answer is 6.

    I'll post more tricks if time permits.If you need to know the secrets behind the tricks PM me.
     
  2. Mtazamaji

    Mtazamaji JF-Expert Member

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    Dec 28, 2010
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    Mhhh Nice amazing tricks

    I need to know but Y pm you??!!. Did u too pm to know those tricks or is it rocket or nuclear science to be be known by selected few.

    A world is a better place if all human being accept to share.
     
  3. Kiranja Mkuu

    Kiranja Mkuu JF-Expert Member

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    Dec 28, 2010
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    hamna tricks wala nini hapo.
    hebu useme tu count from 1-9 uone utakavyoingia chaka bovu
     
  4. Good Guy

    Good Guy JF-Expert Member

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    Go ahead start from 1.if you pick 1 then multiplying by nine you get 09.then 0+9=9 minus by 5 presto you get 4 or what were you refering?
     
  5. Good Guy

    Good Guy JF-Expert Member

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    Okay pal.I'll share it with ya
     
  6. Good Guy

    Good Guy JF-Expert Member

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    On the first trick which involves someone selecting a number from 1 to 9 then multiplying it with nine.Trick ni kwamba sum of two digits which are a multiple of 9 is 9.How angalia
    9 x 1=09:-0+9=9
    9 x 2=18:-1+8=9
    9 x 3=27:-2+7=9
    9 x 4=36 :-3+6=9
    9 x 5=45p:-4+5=9
    Kumbuka hii ni kwa 9 tu.amazing.
    Hivyo hivyo mpaka 10.Kwa hiyo namba atakayofikiria mtu maybe 3,afu ukamwambia azidishe kwa 9 akapata 27 afu akajumlisha 2 kwa 7 atapata 9.kwa hiyo ukisema atoe 4 kwenye jibu unakua unajua ni 9 toa 4. Unaweza hata kusema atoe 2,au 3 unachofanya ni kutoa kutoka kwenye 9 afu unapata jibu.Hope you understood if not uliza.
     
  7. Jackbauer

    Jackbauer JF-Expert Member

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    Nimekusoma mkuu,ngoja nikatengeneze hela kariakoo!
     
  8. Good Guy

    Good Guy JF-Expert Member

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    The secret behind the second trick is even better
    Nilifundishwa hii trick na kaka yangu nilipoanza kusoma about algebra zamani.
    Angalia hii analysis:Ukimwambia mtu afikiri namba yeyote ila sio zero tuseme.
    x
    jumlisha yenyewe kwa yenyewe:
    x+x=2x
    Achana kwanza na hiyo kuzidisha unamalizia na kumwambia agawe kwa namba aliyofikiri ambayo ni x
    utaona ukigawa kwa x ile 2x itaisha na kubaki 2.Hivyo basi unapomwambia mtu afikiri namba afu ajumlishe yenyewe kwa yenyewe afu azidishe kwa 3(hapa unachagua wewe) afu agawe kwa namba aliyofikiri anakua kaiondoa namba yake,we unachofanya ni kuzidisha 3(namba uliyochagua kumwambia aizidishe) kwa mbili afu unamwambia jibu,kwamba ni 6.
    Example:
    Think of a number
    5
    jumlisha yenyewe kwa yenyewe
    5+5=10
    Zidisha jibu kwa 4
    10 x 4=40
    Gawa kwa namba uliyofikiri mwanzo
    (40/5)=8
    we unachukua namba uliyomwambia kuzidishia ambayo ni 4 unazidisha na 2 unamwambia jibu ni 8
    Hope you got it.
     
  9. Good Guy

    Good Guy JF-Expert Member

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    Dec 29, 2010
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    here is another one for ya.
    Think of a three digit number.
    From the number reverse the digits.ie the first to be the last and the last to be the first then find the difference btn it and the number you thought.
    Eg:Think a 3digit no.
    634
    reverse it 436
    find the difference btn the two numbers
    634-436
    hapo tumeelewa ukipata jibu lijeuze tena digit ya mwisho iwe ya kwanza afu lijumlishe kwa ambalo hujajeuza.
    And ablaaakadablaaa you get
    1089.
     
  10. Good Guy

    Good Guy JF-Expert Member

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    Dec 31, 2010
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    i got a PM from someone saying i should share also the secrets to the trick.I didnt post any secret before because there is no secrete.Any 3 digit number when is subtracted to its reversed order then the answer added to its reverse order you always end up with 1089.
    Note
    Numbers like 101,909etc would bring 0 when subtructed to each other because they are the same even when reversed so the trick doesnt work.Cheers.
     
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