Foundation Plus
31st December 1975
- 1Probability Trees3 marks
A bag holds 10 red and 2 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 2Box Plots2 marks
A box plot has minimum 9, lower quartile 13, median 16, upper quartile 19 and maximum 29. Work out the interquartile range.
- 3Prime Factors, HCF and LCM3 marks
Write 36 as a product of its prime factors, using index form.
- 4Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = -9/x, work out y when x = 1, and write down the equation of its vertical asymptote.
- 5Percentages2 marks
Yusuf scored 4 out of 80 in a test. What percentage is this?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1975, including the monthly compilation PDF.