Higher
4th December 1987
- 1Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Capture Recapture2 marks
A capture-recapture estimate is made of the newt population of a stream. State one assumption the method relies on.
- 3Standard Form2 marks
Work out (5 x 10^3) x (6 x 10^-5). Give your answer in standard form.
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 5^x is drawn. Work out y when x = 3, and write down where the curve crosses the y-axis.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 2, y = 18. Work out y when x = 11.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1987, including the monthly compilation PDF.