Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
7th November 2007
- 1Conditional Probability3 marks
16 students study Spanish and 3 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
Four classes in order have frequencies 3, 7, 10, 8. Write down the cumulative frequency at the end of the third class.
- 3The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 6x + 6, work out y when x = 1.
- 5Speed and Density2 marks
A block has volume 10 cm^3 and density 8 g/cm^3. Work out its mass.
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