Higher
10th January 1991
- 1Spheres and Cones3 marks
A cone has base radius 3 cm and vertical height 21 cm. Work out its volume, leaving your answer in terms of pi.
- 2Probability Trees3 marks
A bag holds 7 red and 2 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Histograms2 marks
A histogram class is 4 units wide and contains 2 values. Work out the frequency density.
- 4Standard Form2 marks
Work out (4 x 10^8) x (8 x 10^3). Give your answer in standard form.
- 5Inequalities on Graphs2 marks
A region is defined by y <= 4x - 4. Should the boundary line be solid or dashed, and why?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of January 1991, including the monthly compilation PDF.