Daily Practice

Higher

18th February 1986

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

1
Conditional Probability3 marks
26 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture3 marks
30 fish are marked and released. Later 8 are caught, of which 2 are marked. Estimate the population.
3
Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.5252... as a fraction in its simplest form.
4
Quadratic Formula3 marks
Work out the discriminant of x^2 + 5x + 10 = 0 and say how many real solutions it has.
5
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 2 : 9. Write y in terms of x.

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