Daily Practice

Higher

27th August 1983

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

1
Probability Trees3 marks
7 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 11, lower quartile 13, median 23, upper quartile 25 and maximum 34. Work out the interquartile range.
3
Standard Form3 marks
Work out (30 x 10^8) / (5 x 10^2). Give your answer in standard form.
4
Simultaneous Equations3 marks
5 teas and 2 cakes cost £14.95. 3 teas and 4 cakes cost £14.85. Find the price of a tea.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 75. Work out y when x = 7.

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