Video: Finding the Difference of Two Sets

Find {𝑒, 𝑗} − {𝑐, 𝑥}.

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Video Transcript

Find the set 𝑒, 𝑗 minus the set 𝑐, 𝑥.

We recall that if 𝐴 and 𝐵 are two sets, then the difference is given by 𝐴 minus 𝐵 or 𝐵 minus 𝐴. In this question, we will let set 𝐴 contain the elements 𝑒 and 𝑗 and set 𝐵 contain the elements 𝑐 and 𝑥. 𝐴 minus 𝐵 means the elements of 𝐴 which are not elements of 𝐵. In this question, both 𝑒 and 𝑗 exist in set 𝐴 and not in set 𝐵. This means that the correct answer is the set of elements 𝑒 and 𝑗.

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