Daily Practice

Higher

29th June 1985

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
6 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Box Plots2 marks
A box plot has minimum 4, lower quartile 11, median 17, upper quartile 20 and maximum 23. Work out the interquartile range.
3
Fractional and Negative Indices3 marks
Work out 125^(2/3).
4
Simultaneous Equations3 marks
4 teas and 2 cakes cost £12.80. 1 tea and 4 cakes cost £8.45. Find the price of a tea.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 112. Work out y when x = 7.

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