Foundation Plus
10th June 1978
- 1Ratio2 marks
Red and blue marbles are in the ratio 3 : 4. There are 33 red marbles. How many marbles are there altogether?
- 2Spheres and Cones3 marks
A sphere has radius 6 cm. Work out its volume, leaving your answer in terms of pi.
- 3Venn Diagrams3 marks
In a Venn diagram, 12 are in A only, 3 in B only, 6 in both and 3 in neither. Work out the probability a random one is in both.
- 4Averages from Frequency Tables2 marks
Grouped data has five classes of width 10, the first being 10 < x <= 20. The frequencies in order are 3, 16, 11, 21, 7. Write down the modal class.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.777... 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 June 1978, including the monthly compilation PDF.