WAEC - Mathematics (1989 - No. 34)
The table above gives the scores of a group of students in an English Language test
If a student is chosen at random from the group, what is the probability that the scored at least 6 marks?
3/20
1/5
1/4
3/10
3/4
คำอธิบาย
Probability = 5/20 = 1/4