GCE Mathematics 1989 Question 36

The table below gives the scores of a group of students in an English Language test
Scores: 2, 3, 4, 5, 6, 7
Number of Students: 2, 4, 7, 2, 3, 2
If a student is chosen at random from the group, what is the probability that he scored at least 6 marks?

1. A.3/20
2. B.1/5
3. C.1/4
4. D.3/10
5. E.¾.