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23rd September 1979
- 1Conditional Probability3 marks
22 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Box Plots2 marks
A box plot has a minimum of 17 and a maximum of 65. Work out the range.
- 3Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 7x + 1, work out y when x = 5.
- 5Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 5, y = 36. Work out y when x = 12.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1979, including the monthly compilation PDF.