Daily Practice - Higher
13th September 1993
- 1Repeated Percentage Change3 marks
A price rises by 10% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
- 2Sector Areas and Arc Lengths3 marks
A sector of a circle has radius 7 cm and angle 30°. Work out its area, to 1 decimal place.
- 3Conditional Probability3 marks
20 students study Spanish and 4 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 128 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
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