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Tom and Burt are to take turns removing either 1 or 2 marbles from a circle. There are 7 marbles. The person selecting the last marble is the loser. If tom goes first and each of them makes the best possible removals, who will lose?

Tom will lose because if Tom went T2 B1 T2 B1 T1 or T1 B2 T2 B1 T1.

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