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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 $$\frac{23}{90}$$.