Daily Practice

Higher

15th April 1981

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

1
Probability Trees3 marks
2 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
Four classes in order have frequencies 7, 4, 12, 5. Write down the cumulative frequency at the end of the third class.
3
The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
4
Simultaneous Equations3 marks
2 teas and 1 cake cost £6.25. 2 teas and 5 cakes cost £14.05. Find the price of a tea.
5
Speed and Density2 marks
A block has volume 160 cm^3 and density 2.5 g/cm^3. Work out its mass.

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