Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
- 1Probability Trees3 marks
5 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 minimum 14, lower quartile 21, median 30, upper quartile 40 and maximum 47. Work out the interquartile range.
- 3Fractional and Negative Indices2 marks
Write 2^-1 as a fraction.
- 4Simultaneous Equations3 marks
3 teas and 4 cakes cost £11.05. 1 tea and 4 cakes cost £9.15. Find the price of a tea.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 200. Work out y when x = 4.
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