Daily Practice
Higher
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16th October 1970
- 1Conditional Probability3 marks
21 students study Spanish and 11 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Capture Recapture2 marks
A capture-recapture estimate is made of the fish population of a pond. State one assumption the method relies on.
- 3Reverse Percentages3 marks
A bill is £960 including VAT at 20%. Work out the amount before VAT.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 7x + 12, work out y when x = 5.
- 5Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 6, y = 36. Work out y when x = 3.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of October 1970, including the monthly compilation PDF.