There are 10 cups placed on a table such that 3 are face up


There are 10 cups placed on a table such that 3 are face up and 7 are bottom up. A move is defined as inverting a pair (compulsorily) of cups. What is the minimum number of moves required to make all the cups face the same way?

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Other Subject: There are 10 cups placed on a table such that 3 are face up
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