Question

Find the union and interesection of each of the following A={3,6,9,12}, B ={6,8,9}

Answer 1

Hello,

The answer would be,

A union B = {3,6,9,12}

and A intersection B= {6,9}

Answer 2

`\huge\boxed{ A\ union \ B = \{3,6,8,9,12\}}`

`\huge\boxed{A\ intersection \ B = \{6,9\}}`

Explanation:

A = {3,6,9,12}

B = {6,8,9}

A∪B = {3,6,9,12} ∪ { 6,8,9} [Union means all of the elements should be included in the set of A∪B]

=> A∪B = {3,6,8,9,12}

Now,

A∩B = {3,6,9,12} ∩ {6,8,9} [Intersection means common elements of the set]

=> A∩B = {6,9}