Foundation Plus
6th March 1991
- 1Probability Trees3 marks
A bag holds 8 red and 3 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 7, lower quartile 12, median 16, upper quartile 21 and maximum 23. Work out the interquartile range.
- 3Prime Factors, HCF and LCM3 marks
Write 126 as a product of its prime factors, using index form.
- 4Drawing Other Graphs: Cubic/Reciprocal2 marks
For the curve y = -70/x, work out y when x = 10, and write down the equation of its vertical asymptote.
- 5Percentages2 marks
Ade scored 34 out of 50 in a test. What percentage is this?
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