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Of America's million millionaires in, the average age is 63.


  1. Why is there an "in"? (The main question)
  2. How about using "American" replacing "America's"?
  • What is the source? Is this a translation? – user3169 Mar 26 '18 at 5:23
  • 1
    It's better to include that source with a link if possible. The "in" part is a typo. I think they meant to write "in 1985". – Em. Mar 26 '18 at 5:33
  • It's a dictionary. shanbay.com/review/learning/42379858288 – Zhang Jian Mar 26 '18 at 5:40
  • @Max How clever you are! After reading your comment, I reviewed both English and its Chinese translation. According to the translation, which I usually overlook, it misses "1985". – Zhang Jian Mar 26 '18 at 5:47

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