Daily Practice

Higher Plus

28th March 1965

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 1/2. Work out n.
2
Histograms3 marks
A histogram has four 20-wide classes from 0, with frequency densities 3, 0.5, 2, 1. Which class contains the median?
3
Bounds3 marks
x = 129 and y = 119, each correct to the nearest whole number. Work out the upper bound of x - y.
4
Quadratic Inequalities3 marks
Solve x^2 + 4x - 5 < 0.
5
Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 3, y = 64. Work out y when x = 4.

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