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### Grade 8 - Mathematics4.49 Sets - Basic Operations - Union, Intersection and Compliment

 There are 3 basic operations we can perform on a set. 1) Union: Combine two sets A and B to get their Union written as A U B and read as A is a union of B or A union B. 2) Intersection: Find what 2 sets A and B have in common written as A ÇB and read as A is an intersection of B or A intersects B. 3) Compliment: To find out what is in the universal set but not in the given set A, and is written as A1 and read as A compliment or A prime. Example: If M is a set of months in a year, indicate whether the following statements are True or False. M = {January, February} -----> False since it is not a complete set of monts in a year. February Î M -----> True Monday Î M ----> False Example: A = {1,2,3,4,5,6,7} and B = {3,7,8} A U B = {1,2,3,4,5,6,7,8} A Ç B = {3,7} Directions: Solve the following problems. Also write at least five examples of your own.
 Q 1: A Ç A¢ =A1Anull setuniversal set Q 2: Set A contains all odd numbers. Set B conatians all even numbers. A U B = ____.natural numbers {1,2,3,4,5,.......}even numbers {2,4,5,6,........}odd numbers {1,3,5,7,9,......} Q 3: A = { 1,5,3,7,9} and B = {2,3,4,5,6} then A Ç B = ____{3,5}{5,3,6}{4,5} Q 4: A is set of whole numbers from 0 to 5. Set B is set of odd numbers from 0 to 5. Then A U B = _____?odd numbers from o to 5Whole numbers from 0 to 5even numbers from 0 to 5 Q 5: Set contains all odd numbers. Set B contains all even numbers. A Ç B = ______.universal setnull setset Bset A Q 6: A = {1,2,3,4,5,6} and B = {2,4,6} Which of the following represent A Ç B?{2,4,6}{2,3,4,6}{1,2,3,4,6}{3,4,6} Q 7: A = {1,2,3} and B = {4,5,6} then A Ç B = ______?{}A primeuniversal set Q 8: A = {1,2,3,4,5,6} and B = {1,2,3,4,5,6} Which of the following represent A Ç B?universal setset Anull set Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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