According to the venn diagram below, what is p(a or b or c) ? . 22/25. 23/25. 21/25. 24/25

Given a Venn diagram containing three circles representing three sets, say A, B and C. The number representing the set A or B or C is given by the addition of all the elements inside the three circles excluding the element outside the three circles. Thus from the given Ven diagram n(P or B or C) = 10 + 2 + 8 + 4 + 6 + 5 + 7 = 42. The total number of elements in the Venn diagram (i.e. the universal set) = 42 + 8 = 50. P(A or B or C) = n(A or B or C) / n(Universal set) = 42 / 50 = 21 / 25

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What the heck don’t understand