Daily Practice

Higher

25th September 1982

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

1
Probability Trees3 marks
5 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 8, lower quartile 14, median 17, upper quartile 23 and maximum 28. Work out the interquartile range.
3
The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
4
Simultaneous Equations3 marks
3 teas and 2 cakes cost £6.60. 1 tea and 5 cakes cost £9.35. Find the price of a tea.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 64. Work out y when x = 2.

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