Higher
23rd September 1964
- 1Probability Trees3 marks
4 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 12, 9, 10, 11. Write down the cumulative frequency at the end of the third class.
- 3Surds2 marks
Write sqrt(75) in the form a sqrt(b), where b is as small as possible.
- 4Simultaneous Equations3 marks
3 teas and 3 cakes cost £15.75. 4 teas and 3 cakes cost £18.05. Find the price of a tea.
- 5Speed and Density2 marks
A block has volume 135 cm^3 and density 2.5 g/cm^3. Work out its mass.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1964, including the monthly compilation PDF.