Question

If A = {1, 2, 3, 4, 5, 6, 7, 9, 11), B = {2. 4. 6,
10), C = (3, 6, 9), find A-(B u C)
(1) {1, 4, 5, 7, 11} (2) {1, 5, 7, 8, 11}
(3) {1, 5, 7, 11) (4) {1, 5, 7, 10)​

Answer 1

Step-by-step explanation:

Given,

A={1,2,3,4,5,6,7,9,11}

B={2,4,6,10}

C={3,6,9}

ATQ,

BUC= {2,3,4,6,9,10}

A-(BUC)= element in A - element in BUC

A-(BUC)= {1,2,3,4,5,6,7,9,11}-{2,3,4,6,9,10}

A-(BUC)= {1,5,7,11}

option 3 is the right answer

Answer 2

Answer:

3 is right answer right now