If a two digit positive integer has its digits reversed, the resulting integer differs from the original by 27. By how much do the two digits differ?

If a two digit positive integer has its digits reversed, the resulting integer differs from the original by 27. By how much do the two digits differ? Correct Answer 3

The site of Hisarlik, in northwest Turkey, has been identified as being Troy since ancient times. Archaeological research shows that it was inhabited for almost 4,000 years starting around 3000 B.C.
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