Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
13th July 2005
- 1Enlarging with Negative Scale Factors3 marks
The point (-3, -5) is enlarged by scale factor -2 about the centre (0, -1). Write down the coordinates of the image.
- 2Venn Diagrams3 marks
In a Venn diagram, 17 are in A only, 7 in B only, 5 in both and 6 in neither. Work out the probability a random one is in both.
- 3Cumulative Frequency2 marks
Four classes in order have frequencies 8, 7, 4, 5. Write down the cumulative frequency at the end of the third class.
- 4The Product Rule for Counting3 marks
A code is 3 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 + 1. Work out the gradient of any line perpendicular to it.
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