Daily Practice
Higher Plus
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25th April 1972
- 13d Pythagoras and Trigonometry3 marks
A cuboid measures 12 cm by 4 cm by 6 cm. Work out the length of the longest diagonal inside it, to 1 decimal place.
- 2Probability Equation Questions3 marks
A bag holds 7 red and n blue counters. The probability of taking a red is 1/2. Work out n.
- 3Histograms3 marks
A histogram has two bars: one 20 units wide with frequency density 1.2, one 10 units wide with density 3.5. How many values in total?
- 4Surds3 marks
Expand and simplify (8 + sqrt(2))(8 - sqrt(2)).
- 5Algebraic Fractions3 marks
Simplify (x^2 + 9x + 8)/(x + 1).
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