the difference between a two digit number and the number obtained by interchanging the position of it's digit is 99.what is the difference between the digit.
please help if you know.........
please help if you know.........
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Let the numbers be x and y
the number at ones place is y
and number on tens place is 10x
so the digit will be 10x+y
The interchange of digit is =10y+x
It is given the difference between the digit and interchange is 63 so
10x+y−(10y+x)=63
9x−9y=63
x−y=7
The difference between the digits is 7.
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