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'Ordering Cards' printed from http://nrich.maths.org/

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Look at these cards.
 
 
 
Can you sort them so that they follow round in a loop?
 
 Here is a card from a different set.
 
 card
What number would follow it?
 
What about this one? What would follow it?

 card
 
You can download the above set of cards here.