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如何計算平均美國每天有多少嬰兒出生
How mamy children are born everyday in the U.S.? List the key qauestion in your logic to help solve the problem? List your key assumptions and solve the problem using reasonable guesstimates.Hint: there are approximately 300 million people in the U.S.thanks~ everyday^^
firstly: what is the meaning of average birth quantity?? Ans -
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