Amo 1) Consider U = {1, 2, 3, 4, ..., 21, 22) and A = {factors of 21}, List the elements of (a) A = (b) A' =

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asked Sep 26, 2024 86.4k views

1 Answer

Igor Romanov · Answer 1 · 2024-10-01T01:59:09+0000

The factors of 21 are 1, 3, 7, and 21. The complement of A, denoted by A', includes all the numbers in the universal set U that are not in A.

(a) A = {1, 3, 7, 21}

(b) A' = {2, 4, 5, 6, 8, ..., 20, 22}