Magical Mind Reader

Select any number between 10 and 99 in your mind. Add the two digits of number and subtract the result from the original number. Now see the sign for final number from the table above. Concentrate on the red circle for an instance and click it ,you will see the sign for the resulting number
For eg. select 76. add 7+6=13, subtracty 13 from 76=63.

Try to Guess the logic behind this game.If you get post it as Comment.

4 comments:

  1. It's Quite simple since for a Two Digit number of 10x+y, where the x & y are Tenth & Unit Digit respectively.
    (10x+y)-(x+y)=9x
    And at every position of 9x(for x=1,2,3,...) there is same symbol.
    Too, to not get known the symbols to all numbers are changed at every guess.. ;)
    BTW, for non Maths people it's a Magic..!

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  2. Yeah Deepak you are absolutely right. But Everyone visiting here might not be Maths people..Hence it is noting more than a magic for him/her... :)

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  3. for 2 digit number every time u get substracted the addition of 2 numbers from the original u will get a number which will be the multiplication of 9.& the sign of all multiplication here is same..such assigns of 9,9*2=18,9*3=27,etc multiplication r same...

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  4. @Ovisec you are right man. the answer would be same for all the two digit number i,e. the sign of all multiplications of 9.

    Congratulation :)

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