Group of women

There are 100 women in a group. We know that

  • exactly 70 of them wear glasses,
  • exactly 75 of them have blonde hair,
  • exactly 80 of them are married,
  • exactly 85 of them are under 40.

If a woman in this group is under 40, wears glasses, has blonde hair and married, then she called a special woman. Find the minimum number of special women!


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