Daily Practice - Higher
30th March 1993
- 1Circle Theorems2 marks
A, B and C are points on a circle with centre O. Angle AOC is 134°. Work out angle ABC, where B is on the major arc.
- 2Venn Diagrams3 marks
In a Venn diagram, 14 are in A only, 3 in B only, 3 in both and 3 in neither. Work out the probability a random one is in both.
- 3Capture Recapture3 marks
50 voles are marked and released. Later 44 are caught, of which 4 are marked. Estimate the population.
- 4The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 5Expanding and Factorising Quadratics2 marks
Factorise x^2 - 9.
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