Daily Practice

Higher

17th September 1979

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

1
Probability Trees3 marks
2 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 76 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Fractional and Negative Indices3 marks
Work out 216^(2/3).
4
Simultaneous Equations3 marks
3 teas and 2 cakes cost £9.25. 1 tea and 5 cakes cost £13.05. Find the price of a tea.
5
Repeated Percentage Change3 marks
A price rises by 15% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.

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