Daily Practice
Higher
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17th June 1988
- 1Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 5, y = 35. Work out y when x = 7.
- 2Spheres and Cones3 marks
A sphere has radius 9 cm. Work out its volume, leaving your answer in terms of pi.
- 3Probability Trees3 marks
3 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Capture Recapture2 marks
A capture-recapture estimate is made of the beetle population of a woodland. State one assumption the method relies on.
- 5Surds2 marks
Write sqrt(72) in the form a sqrt(b), where b is as small as possible.
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