• We will chake the answer

AB

1) A={1,2,3,4,5,6,7,8,9,10} B={1,3,5,7,9}

8

410

6

2N

9 53

1

7

1

35

79

OK

5.Which the following given that U is a natural Number , draw a Venn diagrams

Page… 13

9

53

1

7

AB

2) A={1,2,3,4,5,6,7,8,9,10} B={1,3,5,7,9}

8

410

6

2

C={1,3,5}

C

53

7

N

113

5

9

OK

Page… 13

9

53

1

7A

B

3)A={1,2,3,4,5,6,7,8,9,10} B={1,3,5,}

8

4

10

6

2

C={2,4,6}

C

53

1

46

2

OK

Page… 13

Union and Intersection

VDO –V4 - Union

Board

VCO – V5 intersection

Board แผนภาพ Authorware

Union

A={1,2,3,4,5,6}

B={1,3,6,7,8,9}

Exemple 1

321

54

6

A B

A

8

13

6

7

9

= {1,2,3,4,5,6,7,8,9}BOK

Intersection

A={1,2,3,4,5,6}

B={1,3,6,7,8,9}

Exemple 2

321

54

6

A B

A

8

13

67

9

= {1,3,6}B OK

Relative complement or difference of sets

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

B={1,3,6,7,8,9,10}

Exemple 3

3 102 1

54

6

97

A B

A – B

81

3 6

7 9

= {2,4,5}

OK

Relative complement or difference of sets

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

B={1,3,6,7,8,9,10}

Exemple 4

310

2 1

54

6

97

A BB – A

81

3 6

7 9

= {8,10}

OK

Complement

U ={1,2,3,4,5,6,7,8,9,10}

A={1,3,7,8,9}

Exemple 5

3

21

5

4

6 9

7

U

A

1

3

7

9

= {2,4,5,6,10}A 8

10

8

OK

1. A = {2,4,6,8,9} B = { 1,2,3,4,5,6}

2. A = {4,6,8,9} B = { 1,2,3,5}

A B =………………

A B =………………

A B =………………

A B =………………

{1,2,3,4,5,6,8,9}

{2,4,6}

{1,2,3,4,5,6,8,9}

{ }

OK

Practice P 1

Page… 23Home work Practice 1.4

1.Which the following given that U = {1,2,3,4,5,6,7} draw a Venn diagrams

1) A = {2,3,7}

2) A = {3,4,5} and B = {1,3,5,7}

}6,3,2{)3 A

Page… 23Home work Practice 1.4

2) Given that U = {0,1,2,3,4,5,6,7,8} , A={0,2,4,6,8}B = {1,3,5,7} and C = {3,4,5.6}, Write the following in the set-tabular form

BA)1 CB)2 CB)3

CA)4 C)5 AC )6

BC )7 BBA ))(8

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