Higher Plus
30th June 1976
- 1Bounds3 marks
A rectangle is 24 cm by 18 cm, each correct to the nearest cm. Work out the upper bound of its area.
- 2The Nth Term of a Quadratic Sequence3 marks
Work out the nth term of the quadratic sequence 10, 25, 48, 79, ...
- 3Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 2, y = 32. Work out y when x = 4.
- 4The Cosine Rule3 marks
A triangle has sides of 5 cm and 9 cm with an angle of 96° between them. Work out the third side, to 1 decimal place.
- 5Conditional Probability3 marks
A bag holds 4 red, 7 blue and 3 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
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