Mathematics for IGCSE & O level - Probability (Section 2 - No. 26)
A bag contains 3 red, 5 blue, and 2 green marbles. What is the probability of selecting a green marble?
1/10
1/5
2/5
3/10
คำอธิบาย
2 green marbles out of a total of 10 (3+5+2). Probability is 2/10 which simplifies to 1/5.