Higher
11th April 1968
- 1Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Histograms2 marks
A histogram class is 5 units wide and contains 2.5 values. Work out the frequency density.
- 3The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 4Simultaneous Equations3 marks
3 teas and 1 cake cost £10.00. 2 teas and 4 cakes cost £16.00. Find the price of a tea.
- 5Repeated Percentage Change3 marks
A town's population is 25000 and grows by 3% each year. Work out the population after 4 years, to the nearest whole number.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1968, including the monthly compilation PDF.