Higher Plus
20th October 1961
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 10 cm by 11 cm by 15 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 6 red and n blue counters. The probability of taking a red is 3/5. Work out n.
- 3Histograms3 marks
A histogram has two bars: one 10 units wide with frequency density 2.5, one 10 units wide with density 3. How many values in total?
- 4Surds3 marks
Rationalise the denominator of 15/sqrt(3), giving your answer in its simplest form.
- 5Quadratic Simultaneous Equations3 marks
Solve x^2 + y^2 = 625 and y = x + 17 simultaneously.
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