Daily Practice
Higher
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17th November 1990
- 1Circle Theorems2 marks
A, B and C are points on a circle with centre O. Angle AOC is 166°. Work out angle ABC, where B is on the major arc.
- 2Venn Diagrams3 marks
In a Venn diagram, 8 are in A only, 7 in B only, 10 in both and 8 in neither. Work out the probability a random one is in both.
- 3Box Plots2 marks
A box plot has minimum 3, lower quartile 6, median 13, upper quartile 21 and maximum 30. Work out the interquartile range.
- 4Reverse Percentages3 marks
A bill is £72 including VAT at 20%. Work out the amount before VAT.
- 5Expanding and Factorising Quadratics2 marks
Factorise x^2 - 4.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of November 1990, including the monthly compilation PDF.