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25 February, 19:27

Given that, A = {1,2,3,4,5,7} and B = {3,4,8,9}, find

in AB

ii. The number of elements in (AUB)

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Answers (1)
  1. 25 February, 21:28
    0
    8

    Step-by-step explanation:

    The union of the 2 sets are the elements in set A and B

    A = { 1, 2, 3, 4, 5, 7 } and B = {3, 4, 8, 9 }

    A ∪ B = { 1, 2, 3, 4, 5, 7, 8, 9 }

    Note 3 and 4 are not repeated

    number of elements in A ∪ B = 8
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