the sum of 2 digit no. and the no. formed by reversing the order of digits is 154. if the two digits differ by 4, find the number.
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x +y =11 [1]
and x- y =4 when x> y
so x= 9 and y=2
so the no is 29 putting in [1]
and x- y =4 when x> y
so x= 9 and y=2
so the no is 29 putting in [1]
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