Solve it•••••••The sum of the digits of two digit number – InterviewSolution

1.

Solve it•••••••The sum of the digits of two digit number is 15. The number obtained by interchanging its digits exceeds the given number by 9. Find the number.

Answer»

Answer:

here let the TENS digit is X &ONES digit be y

then x+y=15

by interchanging we GET

(10y+x)-(10x+y)=9

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