Soal SMA · Soal cerita · Kesulitan 4/5

A bag contains 3 red, 4 blue, and 5 green marbles. If two marbles are drawn without replacement, what is the probability that they are the same color?

A.19/66
B.1/6
C.1/3
D.1/4

Kunci jawaban & pembahasan

Jawaban: 19/66

P(same)= (3C2+4C2+5C2)/12C2 = (3+6+10)/66 = 19/66.

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