Higher
8th August 1969
- 1Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 8, y = 40. Work out y when x = 5.
- 2Finding the Area of Any Triangle3 marks
A triangle has sides of 5 cm and 15 cm with an angle of 94° between them. Work out its area, to 1 decimal place.
- 3Probability Trees3 marks
3 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Capture Recapture2 marks
A capture-recapture estimate is made of the newt population of a stream. State one assumption the method relies on.
- 5The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1969, including the monthly compilation PDF.