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### High School Mathematics7.5 Difference of Two Sets

 If A and B are any two sets then, A - B = {x/x Î A and x Ï B}. B - A = {x/x ÎB and x Ï A}. Symmetric Difference of Two Sets: If A and B are two sets the symmetric difference these sets is (A - B) È (B - A), and is denoted by A Δ B. Directions: Solve the following problems. Also write at least 5 examples of your own.
 Q 1: If A = {2, 4, 6, 8} and B = {1, 2, 3, 4}, then find A - B.{6, 8}{1, 3} Q 2: If A = {1, 3, 5, 7, 9} and B = {1, 2, 3, 4}, then find B - A. {5, 7, 9}{2, 4} Q 3: If A = {2, 4, 6, 8} and B = {1, 2, 3, 4}, then find the symmetric difference of A and B.{1, 2, 3, 6, 8}{1, 3, 6, 8} Q 4: If A = {1, 3, 5, 7, 9} and B = {1, 2, 3, 4}, then find A - B. {5, 7, 9}{2, 4} Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!