Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
5th March 1998
- 1Probability Trees3 marks
3 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 20 units wide and contains 80 values. Work out the frequency density.
- 3The Product Rule for Counting2 marks
A meal deal has 4 mains, 4 sides and 4 drinks. How many different meals are possible?
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 5^x is drawn. Work out y when x = 3, and write down where the curve crosses the y-axis.
- 5Repeated Percentage Change3 marks
A town's population is 23000 and grows by 6% each year. Work out the population after 5 years, to the nearest whole number.
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