Higher Plus
21st December 1975
- 1Bounds3 marks
x = 69 and y = 35, each correct to the nearest whole number. Work out the upper bound of x - y.
- 2Proof3 marks
Prove that the sum of 7 consecutive integers is always a multiple of 7. State the simplified sum you would use.
- 3Direct and Inverse Proportion Depth3 marks
y is inversely proportional to x^2. When x = 5, y = 16. Work out y when x = 2.
- 4The Cosine Rule3 marks
A triangle has sides 6 cm, 7 cm and 11 cm. Work out the angle opposite the 6 cm side, to 1 decimal place.
- 5Probability Equation Questions3 marks
A bag holds 4 red and n blue counters. The probability of taking a red is 2/3. Work out n.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1975, including the monthly compilation PDF.