Weekly Problem 2 - 2007

Stage: 2 and 3 Challenge Level: Challenge Level:1
8

Number the squares 1 to 6, as shown.

1 3 5
2 4 6


The possible pairings are 1 and 4, 1 and 5, 1 and 6, 2 and 3, 2 and 5, 2 and 6, 3 and 6, 4 and 5.

This problem is taken from the UKMT Mathematical Challenges.

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