+163 Alison chose a two-digit number, divided by 2, multiplied by 9 and then reversed the digits.
Her answer was the same as her original number!
What is the number
Let the first digit be x
Let the second digit be y, then we have:
(10x + y) / 2 X 9=(10y + x), there is only one solution for a two-digit number:
It turns out that x=1 and y=8, so the number is:18 because,
18/2 X 9=81, which when reversed you get the original number of 18
