Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
27th October 2020
- 1Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 2 : 7. Write y in terms of x.
- 2Vectors3 marks
a is the column vector (2, 2) and b is (-6, 4). Work out 4a - 3b as a column vector.
- 3Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Capture Recapture3 marks
10 voles are marked and released. Later 63 are caught, of which 9 are marked. Estimate the population.
- 5The Product Rule for Counting2 marks
A meal deal has 6 mains, 9 sides and 5 drinks. How many different meals are possible?
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