Two Set Problem (Venn diagram) скачать в хорошем качестве

Two Set Problem (Venn diagram)

Please note that, with the Venn diagram, the sum of the four regions is equal to the universal set, which is the same as the union set. thus. n(U)= I + II + III + IV or n(U) = n(A) + n(B) - n(A n B) + n( A u B)'. but if the fourth region is not given, we say, thus it's 0. n(U)= I + II + III or n(U)= n(A) + n(B) - n(A n B) The forth region becomes zero if the question says, "at least". In such a case, the three regions are equal to the universal set. note the "only" in the question and where to place it in the diagram. ‪@easymathematics2517‬