Higher
7th September 1974
- 1Probability Trees3 marks
1 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Box Plots2 marks
A box plot has minimum 13, lower quartile 16, median 25, upper quartile 30 and maximum 37. Work out the interquartile range.
- 3The Product Rule for Counting2 marks
A meal deal has 7 mains, 5 sides and 5 drinks. How many different meals are possible?
- 4Equation of a Line3 marks
A line has gradient 1 and passes through (5, 6). Work out its equation.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 28. Work out y when x = 8.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1974, including the monthly compilation PDF.