Higher
13th April 1987
- 1Similar Shapes (Area and Volume)3 marks
Two similar solids have lengths in the ratio 1 : 3. The larger has a volume of 243 cm^3. Work out the volume of the smaller.
- 2Probability Trees3 marks
A bag holds 5 red and 4 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 88 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 4The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 5Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = -48/x, work out y when x = -4, and write down the equation of its vertical asymptote.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1987, including the monthly compilation PDF.