QuestionFind the number of elements in Region III of a Venn diagram with sets A, B, and C given their sizes and intersections.

Studdy Solution
Calculate the number of elements in Region III.
$$n(U) - [n(A) - n(A \cap B) - n(A \cap C) + n(A \cap B \cap C)] - [n(B) - n(A \cap B) - n(B \cap C) + n(A \cap B \cap C)] - [n(C) - n(A \cap C) - n(B \cap C) + n(A \cap B \cap C)] - n(A \cap B \cap C) - n(I) - n(II) =9$$Region III contains9 elements.