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n (kelipatan 3) = 3, 6 = 2
n (s) = 6
p = 2/6 = 1/3
n ( bkn kelipatan 3) = 1,2,4,5 = 4
p = 4/6 = 2/3
2. n ( mata dadu kmbar) = (1,1 ); (2,2) ; (3,3 ); (4,4 );(5,5) ; (6,6) = 6
n ( s) = 6^2 = 36
p kembar = 6/36 = 1/6
n (jmlh 7) = (1,6) ; (2,5) ; (3,4); (4,3); (5,2); (6,1) = 6
p = 6/36 = 1/6
n ( jmlh krg dr 7) =
(1,1); (1,2) ;(1,3) ; ....(5,1) = 15
p = 15/36 = 5/12
yg titik lanjutin sndiri....maaf y coz bnyk
Maka,
n(A) = 2
n(S) = 6
Sehingga,
p(A) = n(A)
n(S)
= 2/6
= 1/3
Jadi, peluang munculnya dadu kelipatan tiga adaalh 1/3.
- mata dadu bukan kelipatan 3
P(A) +P(A') = 1
P(A') = 1 -1/3
= 3/3 -1/3
= 2/3
Jadi, peluang munculnya mata daduk bukan kelipatan 3 adalah 2/3.
- mata dadu kembar
A = {(1,1) (2,2) (3,3) (4,4) (5,5) (6,6)}
n(A) = 6
n(S) = 36
Maka,
P(A) = n(A)
n(S)
= 6/36
= 1/6
Jadi, peluang munculnya mata dadu kembar adalah 1/6.
- mata dadu jumlah 7
n(A) = 6
n(S) = 36
Maka,
P(A) = n(A)
n(S)
= 6/36
= 1/6
Jad, peluang munculnya dadu jumlah 7 adalah 1/6.
- mata dadu jumlah kurang dari 7
n(A) = 15
n(S) = 36
Maka,
p(A) = n(A)
n(S)
= 15/36
= 5/12
Jadi, peluang munculnya mata dadu jumlah kurang dari 7 adalah 5/12.