Suppose we have: a⋅b⋅c⋅d⋅e⋅f⋅g⋅h⋅i⋅j⋅k⋅l⋅m⋅n⋅o⋅p=0a\cdot{b}\cdot{c}\cdot{d}\cdot{e}\cdot{f}\cdot{g}\cdot{h}\cdot{i}\cdot{j}\cdot{k}\cdot{l}\cdot{m}\cdot{n}\cdot{o}\cdot{p}=0

What is the minimum number of variables equal to zero such that this equation holds?

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Type a concept, like “slope” or “photosynthesis”.

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