It was reported recently that, in an average lifetime of 70 years, each human is likely to swallow about 8 spiders while sleeping. Supposing that the population of the UK is around 60 million, what is the best estimate of the number of unfortunate spiders consumed in this way in the UK each year?
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50 000
600 000
7 000 000
80 000 000
900 000 000
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Junior Mathematical Challenge 2003 (2003)
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