Daily Practice

Higher

31st August 1989

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

1
Probability Trees3 marks
3 of 6 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 2 units wide and contains 8 values. Work out the frequency density.
3
Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
4
Equation of a Line3 marks
A line has gradient 5 and passes through (6, 31). Work out its equation.
5
Repeated Percentage Change3 marks
A town's population is 25000 and grows by 6% each year. Work out the population after 3 years, to the nearest whole number.

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