Daily Practice
Foundation Plus
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1st February 1987
- 1Probability Trees3 marks
A bag holds 3 red and 7 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 2Averages from Frequency Tables3 marks
In a survey 9 households own 1 car, 9 own 2 cars and 7 own 3 cars. Work out the mean number of cars, to 2 decimal places.
- 3Prime Factors, HCF and LCM3 marks
Write 120 as a product of its prime factors, using index form.
- 4Changing the Subject of a Formula3 marks
Make x the subject of y = 4x^2 - 2.
- 5Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 2 : 9. Write y in terms of x.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of February 1987, including the monthly compilation PDF.