Daily Practice · Higher
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10th July 1991
- 1Conditional Probability3 marks
21 students study Spanish and 5 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 6, 10, 5, 9. Write down the cumulative frequency at the end of the third class.
- 3Fractional and Negative Indices2 marks
Write 6^-1 as a fraction.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 + 6x - 3 = 0, to 2 decimal places.
- 5Speed and Density2 marks
A block has volume 115 cm^3 and density 4 g/cm^3. Work out its mass.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1991, including the monthly compilation PDF.