Higher
17th February 1977
- 1Conditional Probability3 marks
18 students study Spanish and 10 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.
- 3The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 4Solving Quadratics3 marks
Solve x^2 - 15x + 54 = 0.
- 5Repeated Percentage Change3 marks
A town's population is 15000 and grows by 3% each year. Work out the population after 6 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 1977, including the monthly compilation PDF.