Higher Plus
16th October 1956
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 13 cm by 3 cm by 14 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 2 red and n blue counters. The probability of taking a red is 1/2. Work out n.
- 3Histograms2 marks
On a histogram, a 5-wide bar and a 20-wide bar have the same frequency density of 2.5. How many more values are in the wider class?
- 4Surds3 marks
Expand and simplify (6 + sqrt(11))(6 - sqrt(11)).
- 5Iteration3 marks
Use the iteration x(n+1) = cube root of (8x(n) + 2) with x(0) = 2. Work out x(1) to 3 decimal places.
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