Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
18th November 1997
- 1Capture Recapture3 marks
15 newts are marked and released. Later 44 are caught, of which 4 are marked. Estimate the population.
- 2The 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?
- 3Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = -60/x, work out y when x = -10, and write down the equation of its vertical asymptote.
- 4Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 5. Write y in terms of x.
- 5Similar Shapes (Area and Volume)3 marks
Two similar solids have lengths in the ratio 1 : 3. The larger has a volume of 1026 cm^3. Work out the volume of the smaller.
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