Write a 2-digit number ab and the number obtained by reversing its digits i.e., ba. Find their sum. Let the sum be a 3-digit number dad.Find the values of a and d.
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2 Answers
1057no is 10a+b and reverse is 10b+a....
adding them we get 11a+11b which is equal to 101d+10a
simplifying we get 11b+a=101d...
since b,d and a are both unit digit numbers....d has to be 1...
11b+a=101
and since a is also a single digit no b can only be 9....
therefore a is 2....
the original no ab is 29...
the sum dad is 121....
