Page 48 - E-Modul Peluang SMP
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Jadi, ( ∪ ) = ( ) + ( ) − ( ∩ )
6
= 9 + 12 −
18 18 18
15
=
18
5
=
6
Jawaban: A
9. Diketahui ( ) = 0,7 dan ( ) = 0,8
Jadi, ( ∩ ) = ( ) × ( )
= 0,7 x 0,8
= 0,56
Jawaban: A
10. Jika kejadian muncul mata dadu pertama bermata 3, maka:
= {(3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (3, 6)}, ( ) = 6
Jika kejadian muncul mata dadu kedua lebih dari 3, maka:
={(1, 6), (2, 6), (3, 6), (4, 6), (5, 6), (6, 6)}, ( ) = 6
∩ = {(3, 6)}, ( ∩ ) = 1
( ) = 6 x 6 = 36
Jadi, ( ∪ ) = ( ) + ( ) − ( ∩ )
1
= 6 + 6 −
36 36 36
11
=
36
Jawaban: B
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