Higher
19th August 1965
- 1Conditional Probability3 marks
22 students study Spanish and 3 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 4 units wide and contains 10 values. Work out the frequency density.
- 3Surds2 marks
Write sqrt(12) in the form a sqrt(b), where b is as small as possible.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve 3x^2 + 2x - 5 = 0, to 2 decimal places.
- 5Repeated Percentage Change3 marks
A town's population is 16500 and grows by 8% each year. Work out the population after 3 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 August 1965, including the monthly compilation PDF.