Daily Practice

Higher

18th December 1982

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

1
Probability Trees3 marks
6 of 8 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 12, lower quartile 17, median 19, upper quartile 23 and maximum 31. Work out the interquartile range.
3
Fractional and Negative Indices3 marks
Work out 81^(3/2).
4
Equation of a Line3 marks
A line has gradient -1 and passes through (4, 4). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 54. Work out y when x = 7.

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