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'Weekly Problem 25 - 2006' printed from http://nrich.maths.org/

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'Saturn' chocolate bars are packed either in boxes of 5 or boxes of 12.
What is the smallest number of full boxes required to pack exactly 2005 'Saturn' bars?

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.
  

This problem is taken from the UKMT Mathematical Challenges.

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