Foundation Plus
1st August 1976
- 1Real Life and Distance Time Graphs2 marks
Zara drives 80 km in 2 hours. Work out the average speed in km/h.
- 2Angles in Polygons2 marks
A regular polygon has an exterior angle of 24°. How many sides does it have?
- 3Probability Trees3 marks
7 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Frequency Trees3 marks
150 people were surveyed. 90 were adults, of whom 30 said yes. 20 of the children said yes. How many said yes altogether?
- 5Error Intervals2 marks
A number y is 14 when truncated to the nearest whole number. Write down the error interval for y.
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