Higher
25th August 1975
- 1Repeated Percentage Change3 marks
A price rises by 20% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 14 cm and 14 cm with an angle of 134° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
5 of 8 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 184 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5The Product Rule for Counting2 marks
A meal deal has 6 mains, 6 sides and 6 drinks. How many different meals are possible?
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