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4d divides 5d (Posted on 2014-12-26) Difficulty: 3 of 5
Find all five digit numbers such that the number formed by deleting the middle digit divides the original number.

Source: Canadian math. contest

  Submitted by Ady TZIDON    
Rating: 5.0000 (1 votes)
Solution: (Hide)
There are 90 possible answers:
mn00*10=mn000, m>0

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionAnswerMath Man2014-12-30 21:11:08
Possible solutionJer2014-12-26 20:41:27
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