Daily Practice
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25th June 1971
- 1Conditional Probability3 marks
32 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 Recapture2 marks
A capture-recapture estimate is made of the ladybird population of a garden. State one assumption the method relies on.
- 3Standard Form2 marks
Work out (2 x 10^6) x (5 x 10^2). Give your answer in standard form.
- 4Solving Quadratics3 marks
Solve x^2 + x - 72 = 0.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 8, y = 40. Work out y when x = 3.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of June 1971, including the monthly compilation PDF.