How many cups of water do you need to serve your friends?
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You have a large number of friends coming over and they all get thirsty. Your first friend asks for 1/2 a cup of water. Your second friend asks for 1/4 a cup of water. Your third friend asks for 1/8 a cup of water, etc.
How many cups of water do you need to serve your friends?
If a normal cup is 200ml than after 9 friends there will be less than 1ml and it is not reasonable that a person will want to drink such amount. So practically 9 cups
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