Daily Practice

Higher Plus

18th July 1978

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

1
Probability Equation Questions3 marks
A bag holds 3 red and n blue counters. The probability of taking a red is 1/3. Work out n.
2
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 1, 0.5, 2, 3. Which class contains the median?
3
Surds3 marks
Expand and simplify (2 + sqrt(3))(2 - sqrt(3)).
4
The Nth Term of a Quadratic Sequence3 marks
Work out the nth term of the quadratic sequence 6, 14, 28, 48, ...
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 49, y = 49. Work out y when x = 25.

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