the sum of the digits of a two digit no is 12. The no obtained by reversing the order of the digits of the given no exceeds the given no by 18. find two digit no
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let the two digital number be
10X + Y
when it's digital are reversed
it will be 10Y + X
According to given data
(10Y+X) - (10X+Y) = 18
9Y - 9X = 18
Y - X = 2
Also X + Y = 12
By solving X = 5
Y = 7
The required number is 57
10X + Y
when it's digital are reversed
it will be 10Y + X
According to given data
(10Y+X) - (10X+Y) = 18
9Y - 9X = 18
Y - X = 2
Also X + Y = 12
By solving X = 5
Y = 7
The required number is 57
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