Daily Practice

Higher

30th March 1991

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

1
Probability Trees3 marks
1 of 7 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 15, lower quartile 19, median 24, upper quartile 26 and maximum 30. Work out the interquartile range.
3
Standard Form3 marks
Work out (20 x 10^7) / (5 x 10^3). Give your answer in standard form.
4
Equation of a Line3 marks
A line has gradient 3 and passes through (6, 9). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 24. Work out y when x = 8.

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