Daily Practice · Higher

Daily Practice - Higher

27th August 1991

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

1
Conditional Probability3 marks
26 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture3 marks
45 fish are marked and released. Later 45 are caught, of which 9 are marked. Estimate the population.
3
Surds2 marks
Write sqrt(72) in the form a sqrt(b), where b is as small as possible.
4
Quadratic Formula3 marks
Work out the discriminant of 4x^2 - 7x + 5 = 0 and say how many real solutions it has.
5
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 7 : 9. Write y in terms of x.

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