Daily Practice
Higher
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7th December 1975
- 1Probability Trees3 marks
4 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Box Plots2 marks
A box plot has a minimum of 5 and a maximum of 21. Work out the range.
- 3Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
- 4Factorising Harder Quadratics3 marks
Factorise 3x^2 + 17x + 20.
- 5Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 7, y = 30. Work out y when x = 5.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1975, including the monthly compilation PDF.