Question

If A={1, 2,3,4} and B={3, 4,5,6,7} find AUB ii A-B iii B-A

Answer 1

Answer:

A = { 1 , 2 , 3 , 4 }

B = { 3 ,4 , 5 , 6 , 7 }

( i ) => A U B = Collection of elements that are present in both the sets .

A U B = { 1 , 2 , 3 , 4 ,5 , 6 , 7 }

( ii ) => A - B = set of elements that are present in set A but not in set B.

A - B = { 1 , 2 }

( iii ) => B - A = set of elements that are present in set B but not in set A .

B - A = { 5 , 6 ,7 }

hope it helps you