Answers

2015-11-18T17:53:20+05:30
Let the digits =a and b
So, number=10a + b

Here,a+b=12
or, a=12-b...(i)
      AND
(10a+b)-(10b+a)=36
10a +b -10b -a =36
9a -9b =36
a-b=4
(12-b)-b=4     (From (i))
12 - 2b =4
2b = 12-4
2b = 8
b = 4
So, a =8
Therefore the number is : 84
0