This is regarding solution of question no 16 of mathematics live test series test 1 In - Maths - Sets Relations and Functions

Question

This is regarding solution of question no 16 of mathematics live
test series test 1

In the solution given what is the basis of derivation given as

n(X intersection Y) + n(Y intersection Z) + n(X intersection Z) - 2
n(X intersection Y intersection Z) = 15

Brijendra Pal · Accepted Answer

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This is regarding solution of question no. 16 of mathematics live test series test 1. In the solution given what is the basis of derivation given as n(X intersection Y) + n(Y intersection Z) + n(X intersection Z) - 2 n(X intersection Y intersection Z) = 15