Question

what is the set the formula of union set​

Answer 1

Answer:

n(AUB)=nA+nB-n(AnB)

n(AUBUC)=nA+nB+n(AnBnC)-n(AnB)-n(AnC)-n(BnC)

Answer 2

n(a) +n(b) +n(c)

Step-by-step explanation:

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