Daily Practice

Higher

31st May 1986

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
4 of 10 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 9, lower quartile 16, median 24, upper quartile 29 and maximum 37. Work out the interquartile range.
3
Surds2 marks
Write sqrt(48) in the form a sqrt(b), where b is as small as possible.
4
Simultaneous Equations3 marks
4 teas and 1 cake cost £7.30. 4 teas and 5 cakes cost £14.90. Find the price of a tea.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 216. Work out y when x = 4.

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