Foundation Plus
22nd July 1968
- 1Probability Trees3 marks
A bag holds 4 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 176 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Prime Factors, HCF and LCM3 marks
Write 126 as a product of its prime factors, using index form.
- 4Substitution3 marks
Use v = u + at with u = 10, a = 8 and t = 6. Work out v.
- 5Repeated Percentage Change3 marks
A town's population is 36000 and grows by 4% each year. Work out the population after 5 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 July 1968, including the monthly compilation PDF.