Higher
1st February 1982
- 1Repeated Percentage Change3 marks
A price rises by 15% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 6 cm and 10 cm with an angle of 59° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
1 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 156 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5Standard Form3 marks
Work out (45 x 10^10) / (5 x 10^4). Give your answer in standard form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of February 1982, including the monthly compilation PDF.