Daily Practice
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11th September 1988
- 1Conditional Probability3 marks
15 students study Spanish and 10 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 9 and a maximum of 29. Work out the range.
- 3The 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?
- 4Solving Quadratics3 marks
Solve x^2 - 4x + 3 = 0.
- 5Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 5, y = 16. Work out y when x = 4.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of September 1988, including the monthly compilation PDF.