Daily Practice

Higher

6th July 1978

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

1
Conditional Probability3 marks
20 students study Spanish and 5 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 5 units wide and contains 20 values. Work out the frequency density.
3
Fractional and Negative Indices2 marks
Write 5^-2 as a fraction.
4
Quadratic Formula3 marks
Work out the discriminant of 2x^2 + x + 7 = 0 and say how many real solutions it has.
5
Repeated Percentage Change3 marks
A town's population is 28500 and grows by 3% each year. Work out the population after 3 years, to the nearest whole number.

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