Daily Practice

Higher

2nd February 1988

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

1
Probability Trees3 marks
4 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture3 marks
10 voles are marked and released. Later 99 are caught, of which 9 are marked. Estimate the population.
3
Fractional and Negative Indices2 marks
Write 3^-2 as a fraction.
4
Equation of a Line3 marks
A line has gradient 5 and passes through (2, 15). Work out its equation.
5
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 5 : 7. Write y in terms of x.

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