Mathematics for IGCSE & O level - Probability (Section 4 - No. 30)
A bag contains 6 blue balls and 4 red balls. If a ball is chosen at random, what is the probability of selecting a red ball?
1/2
2/5
3/5
1/10
説明
The probability is the number of favorable outcomes (4 red balls) divided by the total number of outcomes (10 balls), which simplifies to 2/5.