Daily Practice

Higher

20th March 1986

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
Histograms2 marks
A histogram class is 2 units wide and contains 3 values. Work out the frequency density.
3
Fractional and Negative Indices3 marks
Work out 49^(3/2).
4
Trigonometric and Exponential Graphs2 marks
The curve y = 4^x is drawn. Work out y when x = 2, and write down where the curve crosses the y-axis.
5
Repeated Percentage Change3 marks
A town's population is 5000 and grows by 8% each year. Work out the population after 6 years, to the nearest whole number.

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