LOTTERY

Long version of the problem.

Information about the winner and the solution

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Short Problem Description

This was the February 1998 POTM ... send email to fah@potm.ffast.att.com and ask for all the details on the NEXT POTM ...

The deadline for entering was 2/28/98.

LOTTERY

The country of Elbonia runs a weekly lottery. To enter, you pick seven numbers. Then the King picks seven numbers out of a hat, if your ticket has three or more of the King's numbers on it - YOU WIN!! How many tickets do you have to fill out to guarantee a win?

I'll tell your program how many numbers are in the King's hat, and your program will "fill out" a bunch of lottery tickets. If your tickets guarantee a lottery win, and your program needs fewer tickets than anyone elses - you may win the next POTM!!!
Thanks for this idea go to Luc Kumps and Alfons Lievens from Belgium.
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