Continent

Uncle Tann travels a lot. In each city, he buys a postcard as a souvenir. Tana sorted the postcards by continent. She found that out of 63,756 postcards, one seventh are from Asia, one quarter from America, one eleventh from Africa, one twenty-third from Australia, and the rest from Europe. How many European cities has Uncle Tann visited?

Final Answer:

e =  30141

Step-by-step explanation:

$e=63756\cdot (1-\frac{1}{7}-\frac{1}{4}-\frac{1}{11}-\frac{1}{23})=30141$

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