Daily Practice

Higher

12th August 1987

5 questions · 12 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
18 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Cumulative Frequency2 marks
Four classes in order have frequencies 5, 10, 9, 11. Write down the cumulative frequency at the end of the third class.
3
The 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?
4
Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 5x - 10, work out y when x = -3.
5
Speed and Density2 marks
A block has volume 160 cm^3 and density 2.5 g/cm^3. Work out its mass.

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