Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
29th June 2017
- 1Probability Trees3 marks
5 of 9 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 4 units wide and contains 2 values. Work out the frequency density.
- 3Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 6^x is drawn. Work out y when x = 1, and write down where the curve crosses the y-axis.
- 5Repeated Percentage Change3 marks
A town's population is 33000 and grows by 8% each year. Work out the population after 2 years, to the nearest whole number.
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