Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
28th February 2017
- 1Circle Theorems2 marks
A, B and C are points on a circle with centre O. Angle AOC is 58°. Work out angle ABC, where B is on the major arc.
- 2Venn Diagrams3 marks
In a Venn diagram, 17 are in A only, 8 in B only, 6 in both and 1 in neither. Work out the probability a random one is in both.
- 3Capture Recapture3 marks
45 voles are marked and released. Later 96 are caught, of which 8 are marked. Estimate the population.
- 4Surds2 marks
Write sqrt(18) in the form a sqrt(b), where b is as small as possible.
- 5Expanding and Factorising Quadratics2 marks
Factorise x^2 - 36.
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