Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
5th October 2003
- 1Probability Trees3 marks
1 of 6 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 3 and a maximum of 53. Work out the range.
- 3Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
- 4Simultaneous Equations3 marks
3 teas and 2 cakes cost £8.90. 1 tea and 3 cakes cost £7.75. Find the price of a tea.
- 5Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 6, y = 9. Work out y when x = 3.
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