Unformatted text preview: is closed under addition (has closure). If you add two odd numbers, the answer is not an odd number (3 + 5 = 8); therefore, the set of odd numbers is not closed under addition (no closure). • Commutative means that the order does not make any difference in the result. Note: Commutative does not hold for subtraction....
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 Fall '07
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 Basic Math, Addition, mathematical operations, basic mathematical operations

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