Daily Practice
Higher
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19th June 1990
- 1Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 8. Write y in terms of x.
- 2Vectors3 marks
a is the column vector (-4, -4) and b is (4, 3). Work out 3a - 2b as a column vector.
- 3Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Capture Recapture3 marks
60 fish are marked and released. Later 48 are caught, of which 6 are marked. Estimate the population.
- 5The Product Rule for Counting2 marks
A meal deal has 3 mains, 9 sides and 5 drinks. How many different meals 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 June 1990, including the monthly compilation PDF.