Higher
27th November 1979
- 1Enlarging with Negative Scale Factors3 marks
The point (-2, 6) is enlarged by scale factor -1 about the centre (-2, 4). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 8 are in A only, 10 in B only, 7 in both and 6 in neither. Work out the probability a random one is in both.
- 3Capture Recapture3 marks
55 fish are marked and released. Later 33 are caught, of which 3 are marked. Estimate the population.
- 4Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.222... as a fraction in its simplest form.
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = 4x + 7. Work out the gradient of any line perpendicular to it.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of November 1979, including the monthly compilation PDF.