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Equality of ends (Posted on 2012-03-04) Difficulty: 3 of 5
How many six-digit integers have the sum of their two leftmost digits equal to the sum of their two rightmost digits?

  Submitted by Ady TZIDON    
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Solution: (Hide)
There are 61,500 different six-digit numbers such that the the sum of the leftmost pair of digits equals the sum of the rightmost pair (see DejMar for detailed solution),

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  Subject Author Date
SolutionanswerDej Mar2012-03-04 12:28:37
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