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Find an off number with 3 digits such that all the digits are different and ad up to 15. The difference between the first two digits equals the difference between the last two digits. The hundreds digit is greater than the sum of the tens and one's digits.

 Oct 24, 2021
 #1
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There are only 2 such integers found by a short code in C++:

 

852,  951  Total =  2

 Oct 25, 2021

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