Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
11th January 2023
- 1Conditional Probability3 marks
25 students study Spanish and 5 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 6, 5, 10, 6. 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 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 4Inequalities on Graphs3 marks
Does the point (-4, -2) satisfy y > 2x - 2?
- 5Speed and Density2 marks
A block has volume 15 cm^3 and density 2.5 g/cm^3. Work out its mass.
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