Higher
4th November 1989
- 1Spheres and Cones3 marks
A cone has base radius 9 cm and vertical height 12 cm. Work out its volume, leaving your answer in terms of pi.
- 2Probability Trees3 marks
A bag holds 3 red and 5 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Box Plots2 marks
A box plot has minimum 9, lower quartile 11, median 20, upper quartile 27 and maximum 32. Work out the interquartile range.
- 4Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.666... as a fraction in its simplest form.
- 5Inequalities on Graphs2 marks
A region is defined by y <= -5x - 5. 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 November 1989, including the monthly compilation PDF.