Daily Practice

Higher

12th August 1980

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
18 students study Spanish and 4 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture3 marks
50 newts are marked and released. Later 66 are caught, of which 6 are marked. Estimate the population.
3
Fractional and Negative Indices3 marks
Work out 8^(2/3).
4
Quadratic Formula3 marks
Use the quadratic formula to solve 4x^2 - 2x - 1 = 0, to 2 decimal places.
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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