The smallest 3 digit positive integer obtained by adding two positive two digit numbers, one of which has the units and tens places interchanged as the other is _____	Choose the correct choice from the following options.
A) 100
B) 101
C) 105
D) 110 is answer
E) 121
Ans: D   Solution: as those numbers has digit interchanged and added to get the three digit number means the sum is: = 11(a+b)   so the final number must be multiple of 11. we are looking for smallest three digit number multiple of 11= 110 Ans 110 is answer
<result>D</result>
The smallest 3 digit positive integer obtained by adding two positive two digit numbers, one of which has the units and tens places interchanged as the other is _____