2013 people live on an island. some of these people are truthtellers and the others are liars. the truthtellers always tell the truth whereas the liars always lie. each day one of the people says 'when i have left the island the number of truthtellers will be the same as the number of liars.' then he leaves the island. after 2013 days there is no longer anybody living on the island. how many liars were living there to begin with?

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

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