Refer to Table 14.7, Chapter 14.
i) Find the probability that a student obtained less than 20% in the mathematics test.
ii) Find the probability that a student obtained marks 60 or above.

i) Number of students obtained less than 20% in the mathematics test = 7

Total number of students = 90
Thus, \(P = \frac{7}{90}\)

Therefore, the probability that a student obtained less than 20% in the mathematics test is \(\frac{7}{90}\).

ii) Number of students obtained 60 or above marks = 23
Total number of students = 90
Thus, \(P = \frac{23}{90}\)

Therefore, the probability that a student obtained marks 60 or above is \(\frac{23}{90}\).