Question

if A=(1, 2,3,4) and B=(3, 4,5,6) and C=(1, 2,4,6,7)
1.A-(BUC)
2.(A-B)U(B-C)​

Answer 1

Answer:

1. BUC = { 3,4,5,6,1,2,7}

A - (BUC) = elements that are in A but not in BUC = {} -- null set.

2. A- B = elements that are in A bht not in B

= {1,2}

B-C = elements that are in B but not in C = {3,5}

Hence The union of the two sets = {1,2,4,5}