Foundation Plus
26th August 1961
- 1Ratio2 marks
Red and blue sweets are in the ratio 3 : 4. There are 12 red sweets. How many sweets are there altogether?
- 2Vectors2 marks
a is the column vector (2, 4) and b is (-6, -4). Work out a + b as a column vector.
- 3Probability Trees3 marks
7 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Two Way Tables3 marks
Of 46 students, 26 study French, 17 study German and 11 study both. How many study neither?
- 5Error Intervals2 marks
A number y is 24 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 1961, including the monthly compilation PDF.