# Extending thinking about sequences

## Quiz by Oak National Academy: KS3 Maths (2)

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6 questions

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- Q1In mathematics, sequences can be described as concrete or __________.non-concreteabstract30s
- Q2In 1980, the world marathon record was 2 hrs 10 mins. In the year 2000, it was 2 hrs 5 mins. In the year 2020, it was 2 hrs 0 mins. This is an example of __________ sequence.an abstracta concrete30s
- Q3In 1980, the world marathon record was 2 hrs 10 mins. In the year 2000, it was 2 hrs 5 mins. In the year 2020, it was 2 hrs 0 mins. Why is this concrete sequence limited?Records are decreasing now but can never reach zero. There are physical limits.It is not limited. The pattern will continue at -5 minutes per decade.The record of 2hrs 0 mins cannot be broken.30s
- Q4What value would come before this geometric sequence? 196, 1372, 9604, 67 228, ...Users enter free textType an Answer30s
- Q5Scientists begin to study the population of a particular fish in the North Sea and find it forms a geometric sequence. Using the sequence to predict the population for year 5.3 704 1733 407 1733 707 1433 074 17330s
- Q6Scientists begin to study the population of a particular fish in the North Sea and find it forms a geometric sequence. Estimate the population of the fish the year before the study began.Users enter free textType an Answer30s