Higher
10th February 1983
- 1Conditional Probability3 marks
24 students study Spanish and 4 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Histograms2 marks
A histogram class is 20 units wide and contains 30 values. Work out the frequency density.
- 3Standard Form3 marks
Work out (32 x 10^12) / (8 x 10^5). Give your answer in standard form.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve 3x^2 - x - 2 = 0, to 2 decimal places.
- 5Repeated Percentage Change3 marks
A town's population is 3000 and grows by 4% each year. Work out the population after 2 years, to the nearest whole number.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of February 1983, including the monthly compilation PDF.