Mathematics for IGCSE & O level - Probability (Section 2 - No. 25)
A survey of 100 people showed that 60 prefer coffee, 30 prefer tea, and 10 have no preference. What is the probability a person randomly selected from the survey prefers tea?
3/10
3/7
1/3
1/10
Εξήγηση
30 out of 100 people prefer tea, so probability is 30/100 = 3/10.