Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
23rd July 2025
- 1Conditional Probability3 marks
22 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 9, 7, 6, 5. 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?
- 4Quadratic Formula3 marks
Use the quadratic formula to solve 2x^2 + 9x + 3 = 0, to 2 decimal places.
- 5Speed and Density2 marks
A block has volume 190 cm^3 and density 11 g/cm^3. Work out its mass.
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