Daily Practice
Higher
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14th April 1981
- 1Circle Theorems2 marks
A, B and C are points on a circle with centre O. Angle AOC is 94°. Work out angle ABC, where B is on the major arc.
- 2Venn Diagrams3 marks
In a Venn diagram, 3 are in A only, 15 in B only, 12 in both and 5 in neither. Work out the probability a random one is in both.
- 3Capture Recapture3 marks
25 voles are marked and released. Later 12 are caught, of which 4 are marked. Estimate the population.
- 4Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.4545... as a fraction in its simplest form.
- 5Expanding and Factorising Quadratics2 marks
Factorise x^2 - 100.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1981, including the monthly compilation PDF.