find the symment difference of A
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The common difference is the amount between each number in an arithmetic sequence. ... Therefore, you can say that the formula to find the common difference of an arithmetic sequence is: d = a(n) - a(n - 1), where a(n) is the last term in the sequence, and a(n - 1) is the previous term in the sequence
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•if it belongs to symmetry
The symmetric difference of two sets A and B is the set (A – B) ∪ (B – A) and is denoted by A △ B. The shaded part of the given Venn diagram represents A △ B. A △ B is the set of all those elements which belongs either to A or to B but not to both.
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