October 2018 1 40 Report
4 koin palsu dicampur dengan 8 koin asli. jika 2 koin diambil secara acak, maka peluang terambilnya satu koin asli dan satu koin palsu adalah..
a.1/2
b.16/33
c.1/12
d.1/16
e.1/32

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