Daily Practice

Higher

18th July 1986

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

1
Probability Trees3 marks
3 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 beetle population of a woodland. State one assumption the method relies on.
3
Standard Form3 marks
Work out (14 x 10^6) / (7 x 10^2). Give your answer in standard form.
4
Simultaneous Equations3 marks
4 teas and 3 cakes cost £10.80. 1 tea and 2 cakes cost £5.70. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 7, y = 56. Work out y when x = 15.

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