Higher
31st January 1957
- 1Repeated Percentage Change3 marks
A town's population is 17000 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 (-2, -5) and b is (1, -5). Work out 3a - 4b as a column vector.
- 3Probability Trees3 marks
1 of 9 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 20 units wide and contains 50 values. Work out the frequency density.
- 5Standard Form2 marks
Work out (3 x 10^7) x (5 x 10^2). Give your answer in standard form.
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