Daily Practice

Higher

15th July 1982

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

1
Probability Trees3 marks
1 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 5 units wide and contains 10 values. Work out the frequency density.
3
Reverse Percentages3 marks
A bill is £768 including VAT at 20%. Work out the amount before VAT.
4
Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 5, and write down where the curve crosses the y-axis.
5
Repeated Percentage Change3 marks
A town's population is 19000 and grows by 6% each year. Work out the population after 5 years, to the nearest whole number.

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