Daily Practice - Foundation Plus
5th November 1992
- 1Best Buy Questions3 marks
A pack of 9 batteries costs £4.50. A pack of 36 costs £16.92. Which pack is better value?
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 18°. How many sides does it have?
- 3Probability Trees3 marks
3 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Frequency Trees3 marks
210 people were surveyed. 30 were adults, of whom 15 said yes. 10 of the children said yes. How many said yes altogether?
- 5Error Intervals2 marks
A number y is 81 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 November 1992, including the monthly compilation PDF.