Daily Practice

Higher

23rd February 1968

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 newt population of a stream. State one assumption the method relies on.
3
Fractional and Negative Indices3 marks
Work out 8^(2/3).
4
Simultaneous Equations3 marks
2 teas and 3 cakes cost £7.90. 2 teas and 4 cakes cost £9.80. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 9, y = 18. Work out y when x = 15.

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