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Putih = 8
Biru = 12
Jumlah kelereng = 30
Jumlah kelereng selain merah = 20
peluang ≠ merah = 20/30 = 2/3
putih. :8
biru. :12
peluang merah=10+8+12=30
=10/30=1/3
semoga manfaat......