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Inserting a number into 2023 (Posted on 2023-09-20) Difficulty: 4 of 5
In the middle of 2023 i.e. between 20 and 23 enter a number such that the new number will be a multiple of 2023.
a. What is the smallest number to fulfill the above requirement?
b. What if the number to be inserted should consist of the same digit repeated n times? Please provide a solution with lowest n.
c. In case no solution exists for (b) or it needs too much time, solve for 23, inserting a string of numbers between 2 and 3 so that the resulting number will be divisible by 23.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Puzzle AnswerK Sengupta2023-09-20 20:52:03
Solutioncomputer solutions (a and b)Charlie2023-09-20 13:00:24
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