Question

Q3. If A = {6,7,8,9} B = {4, 6, 8, 10}
and C ={x: x € N:3< x < 7} ; find:
h
(i) A-B
(ii) B-C
(iii) A-(BUC)
[3]​

Answer 1

C={4,5,6}

Answer:

1-{4,7,9}

2-{8,10}

3-{7}

Step-by-step explanation:

As C={4,5,6}

thrfr.

A-B= {6,7,8,9}-{4,6,8,10}

A-B= {4,7,9}

2.

B-C={4,6,8,10}-{4,5,6}

B-C={8,10}

3.

A-(BUC)

(BUC) ={4,5,6,8,10}

A-(BUC)= {6,7,8,9}-{4,5,6,8,10}

A-(BUC)= {7}