Question

If A={−1,7, A ,C, D,3,−12} and B={ D, E, F,−13,14,7}, then what is n(A∪B)?

Answer 1

{A∪B} = { - 1, 7, A, C, D, 3,-12, E , F, - 13, 14}

Answer 2

the n(AUB) is equal to 11.