Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
7th December 2008
- 1Conditional Probability3 marks
14 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 2 and a maximum of 32. 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 - x - 56 = 0.
- 5Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 9, y = 24. Work out y when x = 4.
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