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a.
n(4A) = 1
b.
n(AG≥1) = n(1A3G) + n(2A2G) + n(3A1G)
1A3G = {(A,G,G,G),(G,A,G,G),(G,G,A,G),(G,G,G,A)}, n(1A3G) = 4
2A2G = {(A,A,G,G),(A,G,A,G),(A,G,G,A),(G,A,A,G),(G,A,G,A),(G,G,A,A)}, n(2A2G) = 6
3A1G = {(A,A,A,G),(A,A,G,A),(A,G,A,A),(G,A,A,A)}, n(3A1G) = 4
n(AG≥1) = 4 + 6 + 4 = 14
n(S) = 16
Maka,
= 16
=> artinya 4 koin dan tiap koin ada 2 sisi gambar dan angka
a.) angka =(AAAA) =1
p(A) = 1/16
B.) 1gambar =(GAAA) (AGAA) (AAGA) (AAAG) =4
P(A)= 4/16
= 1/4