the difference between 2 digit number and the number obtained by interchanging its digits is 63 what is the difference between the digits of the number??
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Step-by-step explanation:
in two digits number 1st one is ten's & 2nd one is one's digit.
=> suppose ten's digit = x
=> one's digit = y
=> 10x+y
=> now interchange x with y
=> we get 10y+x
=> difference=63
=> (10x+y)-(10y+x)=63
=> (10x-x) +(y-10y) =63
=> 9x - 9y = 63
=> 9(x-y) =63
=> x-y = 7
difference between two digit = 7.
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