SOLUTION: What is the smallest number that increases its value by 18 when the number's order of the digits is reversed?

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Question 461650: What is the smallest number that increases its value by 18 when the number's order of the digits is reversed?
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
13 to 31
It has to be a two digit number.
The first usable two digit number is 12
since 10 reversed is 01
and 11 is the same reversed
12 to 21 is 19 difference
13 to 31 are your numbers