Answers

2015-09-13T12:12:21+05:30
Let the ones digit be x
and tens digit be y
so the number is 10y +x
now
given in question that x+y =9
10y +x =6x 10y=5x  x=2y
now y =3
x= 6
number is 36
verify sum of digit 9
36 =6x
answer =36
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