Daily Practice · Higher Plus

Daily Practice - Higher Plus

26th April 1996

5 questions · 15 marks · Grades 8-9 · 51 question types in this band

1
Conditional Probability3 marks
A bag holds 7 red, 7 blue and 2 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
2
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 2, 0.5, 1, 3. Which class contains the median?
3
Surds3 marks
Rationalise the denominator of 14/sqrt(7), giving your answer in its simplest form.
4
Rearranging Harder Formulae3 marks
Make x the subject of 6x + 8 = y(x + 8).
5
Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 64. Work out y when x = 4.

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