Higher Plus
31st December 1954
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 36, y = 30. Work out y when x = 25.
- 2The Cosine Rule3 marks
A triangle has sides 7 cm, 8 cm and 13 cm. Work out the angle opposite the 7 cm side, to 1 decimal place.
- 3Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 3/5. Work out n.
- 4Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 1, 0.5, 3, 2. Which class contains the median?
- 5Surds3 marks
Rationalise the denominator of 72/sqrt(6), giving your answer in its simplest form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1954, including the monthly compilation PDF.