Daily Practice
Higher
← All tiers
2nd January 1987
- 1Probability Trees3 marks
6 of 9 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 moth population of a meadow. State one assumption the method relies on.
- 3Fractional and Negative Indices2 marks
Write 3^-2 as a fraction.
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 6^x is drawn. Work out y when x = 1, and write down where the curve crosses the y-axis.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 6, y = 66. Work out y when x = 7.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of January 1987, including the monthly compilation PDF.