Daily Practice

Higher

27th May 1989

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

1
Probability Trees3 marks
7 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 1, lower quartile 8, median 18, upper quartile 23 and maximum 26. Work out the interquartile range.
3
Reverse Percentages3 marks
A bill is £552 including VAT at 20%. Work out the amount before VAT.
4
Equation of a Line3 marks
A line has gradient -2 and passes through (6, -10). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 96. Work out y when x = 9.

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