Foundation Plus
29th April 1991
- 1Probability Trees3 marks
A bag holds 2 red and 5 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 152 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Prime Factors, HCF and LCM3 marks
Write 84 as a product of its prime factors, using index form.
- 4Substitution3 marks
Use v = u + at with u = 3, a = 5 and t = 7. Work out v.
- 5Repeated Percentage Change3 marks
A town's population is 27000 and grows by 3% each year. Work out the population after 2 years, to the nearest whole number.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1991, including the monthly compilation PDF.