Daily Practice

Higher

25th August 1984

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

1
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 72. Work out y when x = 4.
2
Spheres and Cones3 marks
A sphere has radius 12 cm. Work out its volume, leaving your answer in terms of pi.
3
Probability Trees3 marks
3 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has minimum 9, lower quartile 13, median 19, upper quartile 23 and maximum 25. Work out the interquartile range.
5
Fractional and Negative Indices3 marks
Work out 100^(3/2).

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