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sum of the digits of a two digit number is 12. the given number exceeds the number obtained by interchanging the digit by 36. find the given number.
9 years ago

Answers

Steve
If the number is xy, then

x+y=12
10x+y = 36+10y+x

Now just find x and y.

If that's too hard, just think of the pairs of digits that add to 12, and try them out.
9 years ago

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