Daily Practice

Higher

25th January 1972

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 = 3 : 4. Write y in terms of x.
2
Vectors3 marks
a is the column vector (1, -4) and b is (-5, 4). Work out 3a - 2b as a column vector.
3
Probability Trees3 marks
1 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
50 voles are marked and released. Later 28 are caught, of which 7 are marked. Estimate the population.
5
Fractional and Negative Indices2 marks
Write 3^-2 as a fraction.

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