Higher
2nd October 1975
- 1Conditional Probability3 marks
14 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 2 units wide and contains 4 values. Work out the frequency density.
- 3Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 - 12x + 4 = 0, to 2 decimal places.
- 5Repeated Percentage Change3 marks
A town's population is 5000 and grows by 3% each year. Work out the population after 4 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 October 1975, including the monthly compilation PDF.