Daily Practice

Higher

14th October 1960

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

1
Probability Trees3 marks
3 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 newt population of a stream. State one assumption the method relies on.
3
Bounds2 marks
A mass is 110 kg, correct to the nearest 10. Write down the upper bound.
4
Simultaneous Equations3 marks
5 teas and 2 cakes cost £8.50. 3 teas and 2 cakes cost £6.70. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 2, y = 22. Work out y when x = 5.

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