Daily Practice

Higher

19th October 1990

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

1
Conditional Probability3 marks
18 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the beetle population of a woodland. State one assumption the method relies on.
3
Fractional and Negative Indices2 marks
Write 8^-3 as a fraction.
4
Solving Quadratics3 marks
Solve x^2 + 10x + 24 = 0.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 2, y = 14. Work out y when x = 13.

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