Daily Practice

Higher

6th November 1990

5 questions · 14 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 fish are marked and released. Later 10 are caught, of which 2 are marked. Estimate the population.
3
Reverse Percentages3 marks
A bill is £600 including VAT at 20%. Work out the amount before VAT.
4
Equation of a Line3 marks
A line has gradient 4 and passes through (3, 6). Work out its equation.
5
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 4. Write y in terms of x.

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