Foundation Plus
23rd April 1984
- 1Probability Trees3 marks
A bag holds 7 red and 4 blue counters. Two are taken without replacement. Work out the probability both are red.
- 2Box Plots2 marks
A box plot has minimum 10, lower quartile 20, median 29, upper quartile 31 and maximum 39. Work out the interquartile range.
- 3Indices1 mark
Write down the value of 14^1.
- 4Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = 10/x, work out y when x = 5, and write down the equation of its vertical asymptote.
- 5Repeated Percentage Change3 marks
A town's population is 9000 and grows by 6% each year. Work out the population after 5 years, to the nearest whole number.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1984, including the monthly compilation PDF.