Daily Practice
Higher Plus
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13th August 1957
- 1Conditional Probability3 marks
A bag holds 4 red and 5 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
- 2Histograms3 marks
A histogram has four 10-wide classes from 0, with frequency densities 2, 0.5, 1, 3. Which class contains the median?
- 3Surds3 marks
Expand and simplify (2 + sqrt(2))(2 - sqrt(2)).
- 4Transforming Graphs y=f(x)3 marks
The point (1, -5) lies on y = f(x). Write down its image on y = -f(x).
- 5Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 50. Work out y when x = 5.
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