Higher Plus
23rd July 1965
- 1The Nth Term of a Quadratic Sequence3 marks
Work out the nth term of the quadratic sequence 4, 15, 34, 61, ...
- 2Velocity Time Graphs2 marks
On a velocity-time graph a car speeds up in a straight line from 4 m/s to 6.5 m/s over 5 seconds. Work out the acceleration.
- 3Perpendicular Lines and the equation of a tangent3 marks
The point (10, 24) lies on the circle x^2 + y^2 = 676. Work out the gradient of the tangent to the circle at that point.
- 4Conditional Probability3 marks
A bag holds 7 red, 5 blue and 6 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?
- 5Histograms3 marks
A histogram has two bars: one 5 units wide with frequency density 0.4, one 5 units wide with density 3.5. How many values in total?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1965, including the monthly compilation PDF.