Find the original number – InterviewSolution

1.	Find the original number
Answer» x-y=3and no. is 10x+ywhen we REVERSE this 10y+xand we ADD both 10x+y+10y+x=12111x+11y=121x+y=11so we can SAY x+y=11and x-y=3then we SOLVE both EQUATIONAND x=7 and y=4

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