Higher
5th March 1975
- 1Enlarging with Negative Scale Factors3 marks
The point (6, 3) is enlarged by scale factor -3 about the centre (-2, 1). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 5 are in A only, 17 in B only, 12 in both and 10 in neither. Work out the probability a random one is in both.
- 3Cumulative Frequency2 marks
Four classes in order have frequencies 10, 6, 4, 4. Write down the cumulative frequency at the end of the third class.
- 4The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 5Parallel and Perpendicular Lines3 marks
A line has equation y = -2x + 2. 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 March 1975, including the monthly compilation PDF.