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A is the set of factors of 15, B is the set of prime numbers less than10, then what is (AUB) a. {1,3,5,7 } b. {1,2,3,5} c. {1,2,3,5,7} d. {2,3,5}

Sagot :

AlgebraicAardvark

A U B would "the set of numbers that are either factors of 15 OR prime numbers less than 10 OR both"

A = { 1, 3, 5, 15}

B = {2, 5, 7 }

A U B = { 1, 2, 3, 5, 7, 15 }

Of your choices, the answer would be C,

even though it is missing a factor of 15.

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