Question

let A={A,B,C} is A C B ? what is A U B?
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Answer 1

Answer:

A U B is true and A C B is also true.

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Step-by-step explanation:

Answer 2

Answer:

A∪B=B

Step-by-step explanation:

Given A⊂B, that is A subset of B,

since the union of A and B contains all elements in A as well as in B, and all elements in A is an element of B,  

A∪B contains all elements in B.

hence the answer

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