Tiga uang logam datas distos bersama sama, tentukan satu gambar, tiga angka, paling sedikit dua angka

p (satu gambar) = { AGG, GAG, GGA }
n(A) = 3
n(S) = 8
p(A) = 3/8

p(tiga angka) = { AAA }
n(A) = 1
n(S) = 8
p(A) = 1/8

p(paling sedikit 2 angka) = { AAA, AAG, AGA, GAA }
n(A) = 4
n(S) = 8
p(A) = 4/8 = 1/2