Higher
15th September 1977
- 1Probability Trees3 marks
2 of 6 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 2 units wide and contains 8 values. Work out the frequency density.
- 3Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.666... as a fraction in its simplest form.
- 4Equation of a Line3 marks
A line has gradient 4 and passes through (2, 4). Work out its equation.
- 5Repeated Percentage Change3 marks
A town's population is 31000 and grows by 6% each year. Work out the population after 3 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 September 1977, including the monthly compilation PDF.