1. Go the Distance

Place the numbers 1 through 10 (each used exactly once) into the circles so that each pair of consecutive circles is farther way than the last pair.

2. Making Change

In a certain country, it takes a minimum of 5 coins to make 13 centos, and a minimum of 4 coins to make 14 centos. What are the denominations of the coins in this country?

3. Pentomino Division

Divide each area into two pieces so that each of the 12 pentominoes is formed exactly once.

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