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Eight of them (Posted on 2020-06-03) Difficulty: 2 of 5
A 4-digit zeroless number N=ABCD has a certain specific feature:
The last 3 digits of a product ABCD*DCBA are zeros.

List all such numbers, explaining your reasoning.

No Solution Yet Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: Analytic solutionSteve Herman2020-06-04 17:22:28
SolutionAnalytic solutionJer2020-06-04 12:56:02
SolutionSolutionLarry2020-06-03 10:45:35
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