Daily Practice

Higher Plus

11th October 1987

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

1
Conditional Probability3 marks
A bag holds 5 red, 4 blue and 4 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, 3, 0.5, 1. Which class contains the median?
3
Bounds3 marks
x = 192 and y = 169, each correct to the nearest whole number. Work out the upper bound of x - y.
4
Transforming Graphs y=f(x)3 marks
The point (-4, 2) lies on y = f(x). Write down its image on y = f(x) - 3.
5
Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 3, y = 16. Work out y when x = 2.

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