Daily Practice

Higher

23rd March 1990

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

1
Probability Trees3 marks
4 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the fish population of a pond. State one assumption the method relies on.
3
The Product Rule for Counting2 marks
A meal deal has 3 mains, 5 sides and 4 drinks. How many different meals are possible?
4
Simultaneous Equations3 marks
2 teas and 4 cakes cost £9.90. 1 tea and 4 cakes cost £8.65. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 9, y = 99. Work out y when x = 11.

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