Daily Practice

Higher

7th April 1978

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

1
Probability Trees3 marks
7 of 10 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 snail population of a hedgerow. State one assumption the method relies on.
3
Fractional and Negative Indices3 marks
Work out 8^(2/3).
4
Simultaneous Equations3 marks
3 teas and 1 cake cost £6.90. 3 teas and 2 cakes cost £9.75. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 3, y = 27. Work out y when x = 9.

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