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It is a 2-digit positive integer, sum of its digits is 10, subtracting 72 from it swaps its two digits. What is number?

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I'm thinking of a number.

  • It is a two-digit positive integer.
  • The sum of its digits is 10.
  • Subtracting 72 from the number swaps its two digits.

What is the number?

posted Nov 24, 2017 by anonymous

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1 Answer

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91 ===> 9 + 1 = 10.
91 - 72 = 19.

answer Nov 24, 2017 by Tejas Naik
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