Daily Practice
Higher
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11th July 1985
- 1Probability Trees3 marks
3 of 10 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 7.5 values. Work out the frequency density.
- 3The Product Rule for Counting2 marks
A meal deal has 7 mains, 7 sides and 6 drinks. How many different meals are possible?
- 4Factorising Harder Quadratics3 marks
Factorise 12x^2 + 11x - 5.
- 5Repeated Percentage Change3 marks
A town's population is 18000 and grows by 6% each year. Work out the population after 6 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 July 1985, including the monthly compilation PDF.