48th Kürschák Competition 1947

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1.  Prove that 462n+1 + 296·132n+1 is divisible by 1947.
2.  Show that any graph with 6 points has a triangle or three points which are not joined to each other.
3.  What is the smallest number of disks radius ½ that can cover a disk radius 1?

 

The original problems are in Hungarian, but are no longer easy to find. Many thanks to Alexander Golovanov for the English translation.

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John Scholes
jscholes@kalva.demon.co.uk
8 Jan 2003
Last corrected/updated 8 Jan 2003