b. symmetric difference the set of customers of 1 although not each on the specified sets. Normally symbolized: A + B These nouns check with a lack of correspondence or settlement. Difference is the most normal: differences in shade and dimensions; a difference of degree although not of type. https://dantevmcrg.blogspothub.com/34762205/the-definitive-guide-to-localized-thermal-test-systems