a. komplemen mata dadu kembar?
b. jumlah mata dadu 7?
c. jumlah mata dadu 8?
d. jumlah mata dadu kurang dari 7?
e. jumlah mata dau tidak kurang dari 7?
Pembahasan :
n (5) = 6 x 6 = 36
a. Titik sampel kejadian A =
{(1.1), (2,2), (3,3), (4,4), (5,5), (6,6)}
n (A) = 6
n (AC) = n (5) – n (A)
= 36 – 6
= 30
P (AC ) = n (AC )
_______
n (5)
= 30/36
= 5/6
b. Titik sampel kejadian A =
{(1,6), (2,5), (3,4), (4,3), (5,2), (6,1)}
n (A) = 6
n (5) = 36
P (A) = n (A)
______
n (5)
= 6/36
= 1/6
c. Titik sampel kejadian A =
{ (2,6), (3,5), (4,4), (5,3), (6,2)}
n (A) = 5
n (5) = 36