DOUBLE PARITY RULE
Text: [Quantum Arithmetic] € No square number may be 2-par or 3-par. € Every 3-par number is the product of a 3-par and a 5-par number, or as the product of an odd number of 3-par products. € A 2-par integer is, "2", or a product of 2 and any odd integer. The odd number may be either 3-par or 5-par.
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