Foundation Plus
6th October 1960
- 1Best Buy Questions3 marks
A pack of 5 batteries costs £1.00. A pack of 15 costs £2.25. Which pack is better value?
- 2Vectors2 marks
a is the column vector (3, 3) and b is (-5, -8). Work out a + b as a column vector.
- 3Probability Trees3 marks
2 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Averages from Frequency Tables3 marks
In a survey 6 households own 1 car, 2 own 2 cars and 9 own 3 cars. Work out the mean number of cars, to 2 decimal places.
- 5Error Intervals2 marks
A number y is 78 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 October 1960, including the monthly compilation PDF.