Daily Practice - Foundation Plus
10th August 1995
- 1Best Buy Questions3 marks
A pack of 5 teabags costs £1.25. A pack of 15 costs £2.85. Which pack is better value?
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 72°. How many sides does it have?
- 3Probability Trees3 marks
4 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Averages from Frequency Tables2 marks
Grouped data has five classes of width 5, the first being 20 < x <= 25. The frequencies in order are 21, 7, 3, 16, 11. Write down the modal class.
- 5Error Intervals2 marks
A number y is 3 when truncated to the nearest whole number. Write down the error interval for y.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1995, including the monthly compilation PDF.