Page 50 - E-Modul Peluang SMP

Misal = kejadian munculnya jumlah kedua mata dadu kurang

dari 10.

= {(1, 1), (2, 1), (3, 1), (4, 1), (5, 1), (6, 1), (1, 2), (2, 2),
(3, 2), (4, 2), (5, 2), (6, 2), (1, 3), (2, 3), (3, 3), (4, 3),
(5, 3), (6, 3), (1, 4), (2, 4), (3, 4), (4, 4), (5, 4), (1, 5),

(2, 5), (3, 5) (4, 5), (1, 6), (2, 6), (3, 6)}

( ) = 30
( ) 30 15
( ) = = =
( ) 36 18

Jawaban: D

Latihan Peluang Kejadian Majemuk

1. Misalkan kejadian muncul mata dadu ganjil:
= {1, 3, 5}, maka ( ) = 3

Misalkan kejadian muncul mata dadu prima:
={2, 3, 5}, maka ( ) = 3

∩ = {3, 5}, maka ( ∩ ) = 2
( ) = 6

Jadi, ( ∪ ) = ( ) + ( ) − ( ∩ )

3
3
2
= + −
6 6 6
4
=
6
2
=
3
Jawaban: D

42