Question

solve this fast useless ans will be reported​

Answer 1

Step-by-step explanation:

Answer:

Step-by-step explanation:

➡️n(A U B) = n(A only) + n(B only) + n(A ∩ B)

➡️n(A U B) = n(A) - x + n(B) - x + x

➡️n(A U B) = n(A) + n(B) - x - x + x

➡️ n(A U B) = n(A) + n(B) - 2x + x

➡️n(A U B) = n(A) + n(B) - x

n(A U B) = n(A) + n(B) - n(A ∩ B)

Hence proved ..

Hope it helps..

Brainliest please..

Answer 2

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