Daily Practice

Higher

6th May 1980

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 4 : 5. Write y in terms of x.
2
Vectors3 marks
a is the column vector (2, 0) and b is (-5, -5). Work out 5a - 2b as a column vector.
3
Probability Trees3 marks
3 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture3 marks
35 voles are marked and released. Later 28 are caught, of which 4 are marked. Estimate the population.
5
The Product Rule for Counting2 marks
A meal deal has 8 mains, 7 sides and 4 drinks. How many different meals are possible?

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