Daily Practice

Higher

21st May 1981

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

1
Probability Trees3 marks
3 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Histograms2 marks
A histogram class is 10 units wide and contains 40 values. Work out the frequency density.
3
Bounds2 marks
A mass is 570 kg, correct to the nearest 10. Write down the upper bound.
4
Equation of a Line3 marks
A line has gradient -2 and passes through (6, -20). Work out its equation.
5
Repeated Percentage Change3 marks
A town's population is 32500 and grows by 3% each year. Work out the population after 5 years, to the nearest whole number.

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