Question

consider the set A={1, 2,3,4}B={3, 4,5}C={3, 6,7}findAU(BnC)​

Answer 1

Answer:

AU(BnC)= {1,2,3,4}

Step-by-step explanation:

since A={1,2,3,4} , B=3,4,5 ; C={3,6,7}

UNION MEANS - COMBINATION OF REQUIRED SETS .

INTERSECTION MEANS - COMMON VALUES IN GIVEN SETS .

( BnC) = {3,4,5}n{3,6,7}

          = { 3 }    - since common number is 3 in 2 sets

AU(BnC) = {1,2,3,4}U{3}

                = {1,2,3,4} - since 3 cannot be repeated again as it is already exists in set A