Daily Practice

Higher

18th August 1988

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
23 students study Spanish and 9 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Histograms2 marks
A histogram class is 4 units wide and contains 16 values. Work out the frequency density.
3
Fractional and Negative Indices2 marks
Write 3^-2 as a fraction.
4
Quadratic Formula3 marks
Work out the discriminant of 3x^2 + 3x + 6 = 0 and say how many real solutions it has.
5
Repeated Percentage Change3 marks
A town's population is 8000 and grows by 8% each year. Work out the population after 6 years, to the nearest whole number.

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