1.diketahuhi A={1,3,5,7,9} dan B={2,3,5,7} Hitung n(A),n(B),n(a U B),dan n(A n B).

Jawaban:

1. A={1,3,5,7,9} dan B={2,3,5,7}

n(A) = 5

n(B) = 4

AñB = {3,5,7}, n(AñB) = 3

AūB = {1,2,3,5,7,9}, n(AūB) = 6

2. n(A)=4,n(B)=3, dan n(A n B ) =2

n(AūB) = n(A)+n(B)-n(A n B )

= 4+3-2

= 5

n(A-B) = n(A)-n(AñB)

= 4-2 =2

n(B-A) = n(B)-n(AñB)

= 3-2 = 1

Jawaban:

Dik:A={1,3,5,7,9} dan B={2,3,5,7}

Dit:n(A), n(B) n(A U B), n(A n B)?

Jawab: n(A)= {1,3,5,7,9}

=Jumlahnya 5 angka

n(A)= 5

n(B)={2,3,5,7}

=Jumlahnya 4 angka

n(B)= 4

(A U B)=`{1,2,3,5,7,9}

=Jumlahnya 6 angka

n(A U B)= 6

(A n B)={3,5,7}

=Jumlahnya 3 angka

n(A n B)= 3

Maaf ya kalo salah, soalnya saya juga manusia biasa