Daily Practice
Higher
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9th March 1972
- 1Probability Trees3 marks
2 of 7 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 20 units wide and contains 80 values. Work out the frequency density.
- 3Fractional and Negative Indices2 marks
Write 6^-3 as a fraction.
- 4Equation of a Line3 marks
A line has gradient 2 and passes through (2, 9). Work out its equation.
- 5Repeated Percentage Change3 marks
A town's population is 10000 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 March 1972, including the monthly compilation PDF.