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As a XOR b NOR c is not equal to a NOR b XOR c,there must be some precedence rule for all operators in Boolean algebra.So what is the precedence rule for XOR,NAND,XNOR,NOR ??

Dipak Koley
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    Possible duplicate of [Logical operators priority with NAND, NOR, XNOR](https://stackoverflow.com/questions/8167779/logical-operators-priority-with-nand-nor-xnor) – Mathews Sunny Dec 16 '17 at 16:55

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The precedence is NOT > XOR > AND > OR, some of the gates you mention are a combination of two operators in reality. For instance A NAND B can be thought of as NOT(A AND B).

Dash Winterson
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