Who Can Speak All 4 Languages?

Probability Level 2

At the Winter Sochi Olympics Press Conference, there are 200200 foreign journalists. Out of them,

  • 175175 people can speak German,
  • 150150 people can speak French,
  • 180180 people can speak English, and
  • 160160 people can speak Japanese.

What is the minimum number of foreigners that can speak all the four languages?

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