Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

2nd October 2008

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

1
Probability Trees3 marks
3 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Histograms2 marks
A histogram class is 10 units wide and contains 15 values. Work out the frequency density.
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
4 teas and 2 cakes cost £8.90. 3 teas and 5 cakes cost £13.85. Find the price of a tea.
5
Repeated Percentage Change3 marks
A town's population is 30500 and grows by 8% each year. Work out the population after 5 years, to the nearest whole number.

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