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07-11-2021
Mathematics

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In a two digits number the sum of the digit is 8. The difference this number and the number with the digits reversed is 54. What is the number?

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Shaunneedstoknow Shaunneedstoknow

07-11-2021

b#~8=+/"1 sep b=.a#~54=|a-10#.|."1 sep a=.10 to 99

17 71

Alternately:

10#.b#~(8=+/"1 b)*.54=|a-10#.|."1 b=.sep a=. 10 to 99

17 71

The answer is 71.

71 - 17 = 54.

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