You could buy
You can buy one of the following:
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Random number tables
"A Million Random Digits with 100,000 Normal Deviates" by Michael D. Rich for £62 (SG$118.90) from waterstones
Thousands of
You can buy one of the following:
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Cups of instant coffee
Cost per cup of instant coffee for £0.05 (SG$0.09)
Shopping list
You can buy all of the following: