Higher
13th December 1986
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 36. Work out y when x = 7.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 4 cm and 13 cm with an angle of 105° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
2 of 6 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 14, lower quartile 19, median 28, upper quartile 38 and maximum 48. Work out the interquartile range.
- 5The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1986, including the monthly compilation PDF.