Daily Practice · Higher

Daily Practice - Higher

24th January 1992

5 questions · 13 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
Capture Recapture2 marks
A capture-recapture estimate is made of the fish population of a pond. State one assumption the method relies on.
3
Fractional and Negative Indices2 marks
Write 4^-3 as a fraction.
4
Simultaneous Equations3 marks
5 teas and 1 cake cost £9.30. 3 teas and 5 cakes cost £12.40. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 5, y = 15. Work out y when x = 9.

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