Higher
10th March 1984
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 75. Work out y when x = 6.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 5 cm and 15 cm with an angle of 84° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
5 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Box Plots2 marks
A box plot has minimum 3, lower quartile 13, median 22, upper quartile 30 and maximum 37. Work out the interquartile range.
- 5Standard Form2 marks
Work out (6 x 10^4) x (3 x 10^-4). Give your answer in standard form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1984, including the monthly compilation PDF.