The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?

  • Option 1)

    3

  • Option 2)

    4

  • Option 3)

    5

  • Option 4)

    None \: of\: these

  • Option 5)

    Can't\: be \: determined

Answers (1)

           (10x+y)-(x+10y)=36

9x-9y=36

x-y=4

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