Higher
3rd November 1971
- 1Spheres and Cones3 marks
A cone has base radius 8 cm and vertical height 9 cm. Work out its volume, leaving your answer in terms of pi.
- 2Probability Trees3 marks
A bag holds 5 red and 3 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Cumulative Frequency2 marks
Four classes in order have frequencies 11, 7, 7, 8. Write down the cumulative frequency at the end of the third class.
- 4Bounds2 marks
A mass is 38 kg, correct to the nearest whole number. Write down the lower bound.
- 5Inequalities on Graphs2 marks
A region is defined by y < 4x - 1. Should the boundary line be solid or dashed, and why?
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