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Let A = {x : x is a natural number and a factor of 18} and B = {x : x is a natural number and less than 6}. Find A ∪ B.

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DANIELLANOGANIN

1. Let A = {x : x is a natural number and a factor of 18} and B = {x : x is a natural number and less than 6}. Find A ∪ B.  

Solution:  

A = {1, 2, 3, 6, 9, 18}  

B = {1, 2, 3, 4, 5}  

Therefore, A ∪ B = {1, 2, 3, 4, 5, 6, 9, 18}

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