Daily Practice - Higher
22nd July 1991
- 1Conditional Probability3 marks
20 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 92 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.1818... as a fraction in its simplest form.
- 4Drawing Quadratic Graphs2 marks
For the curve y = x^2 - 3x - 2, work out y when x = 0.
- 5Repeated Percentage Change3 marks
A price rises by 20% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1991, including the monthly compilation PDF.