Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
30th January 2003
- 1Repeated Percentage Change3 marks
A town's population is 15500 and grows by 4% each year. Work out the population after 4 years, to the nearest whole number.
- 2Vectors3 marks
a is the column vector (-4, -4) and b is (5, -5). Work out 2a - 3b as a column vector.
- 3Probability 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.
- 4Histograms2 marks
A histogram class is 2 units wide and contains 5 values. Work out the frequency density.
- 5Fractional and Negative Indices3 marks
Work out 216^(2/3).
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