Higher
26th March 1990
- 1Expanding Triple Brackets3 marks
Expand and simplify (x + 4)(x - 1)(x - 5).
- 2Repeated Percentage Change3 marks
A price rises by 10% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
- 3Pythagoras2 marks
A right-angled triangle has a hypotenuse of 5 cm and one shorter side of 3 cm. Work out the other shorter side.
- 4Venn Diagrams3 marks
In a Venn diagram, 5 are in A only, 8 in B only, 2 in both and 9 in neither. Work out the probability a random one is in both.
- 5Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 104 values. What cumulative frequency do you read across from to estimate the lower quartile?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1990, including the monthly compilation PDF.