Daily Practice

Higher Plus

7th November 1952

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

1
Conditional Probability3 marks
A bag holds 3 red and 10 blue counters. Two are taken without replacement. Given the first was red, what is the probability the second is blue?
2
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 1, 3, 2, 0.5. Which class contains the median?
3
Surds3 marks
Rationalise the denominator of 8/sqrt(2), giving your answer in its simplest form.
4
The Nth Term of a Quadratic Sequence3 marks
Work out the nth term of the quadratic sequence 11, 17, 25, 35, ...
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 16, y = 20. Work out y when x = 9.

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