Foundation Plus
19th March 1987
- 1Best Buy Questions3 marks
A pack of 10 sponges costs £1.50. A pack of 40 costs £5.20. Which pack is better value?
- 2Spheres and Cones3 marks
A sphere has radius 3 cm. Work out its volume, leaving your answer in terms of pi.
- 3Venn Diagrams3 marks
In a Venn diagram, 15 are in A only, 11 in B only, 10 in both and 2 in neither. Work out the probability a random one is in both.
- 4Capture Recapture3 marks
35 voles are marked and released. Later 84 are caught, of which 7 are marked. Estimate the population.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.444... as a fraction in its simplest form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1987, including the monthly compilation PDF.