Foundation Plus
1st September 1977
- 1Best Buy Questions3 marks
A pack of 4 pencils costs £2.00. A pack of 12 costs £5.52. 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
2 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Frequency Trees3 marks
140 people were surveyed. 30 were adults, of whom 15 said yes. 20 of the children said yes. How many said yes altogether?
- 5Error Intervals2 marks
A number y is 33 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 September 1977, including the monthly compilation PDF.