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the sum of digit of a two digit number is 7. the number obtained by interchanging the digit exceeds the original number by 27. find the number |
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Answer» :-Find the number.Given:-The SUM of DIGIT of a TWO digit number is 7. The number obtained by interchanging the digit exceeds the original number by 27.Solution:-Let the ones place digit be " x "Tens place digit be " y "So,The number will be 10y + xIf the digit is reversed then Now,By adding equation ( 1 ) and ( 2 )we getHence, |
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