Daily Practice

Higher

9th January 1981

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

1
Probability Trees3 marks
7 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 snail population of a hedgerow. State one assumption the method relies on.
3
Bounds2 marks
A mass is 43 kg, correct to the nearest whole number. Write down the upper bound.
4
Simultaneous Equations3 marks
2 teas and 4 cakes cost £15.10. 2 teas and 3 cakes cost £11.75. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 8, y = 96. Work out y when x = 6.

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