Daily Practice

Higher

14th February 1981

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

1
Probability Trees3 marks
3 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 4, lower quartile 12, median 21, upper quartile 27 and maximum 31. Work out the interquartile range.
3
Standard Form3 marks
Work out (30 x 10^11) / (6 x 10^4). Give your answer in standard form.
4
Equation of a Line3 marks
A line has gradient -4 and passes through (6, -31). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 144. Work out y when x = 8.

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