Daily Practice
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24th August 1971
- 1Conditional Probability3 marks
17 students study Spanish and 12 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Capture Recapture3 marks
15 beetles are marked and released. Later 90 are caught, of which 9 are marked. Estimate the population.
- 3Fractional and Negative Indices2 marks
Write 4^-3 as a fraction.
- 4Inequalities on Graphs3 marks
Does the point (-1, -3) satisfy y > 4x - 4?
- 5Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 5 : 8. Write y in terms of x.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1971, including the monthly compilation PDF.