SOLUTION: My head is spinning I really don't know this please show how thank you so much. Set K contains 50 elements, set J contains 66 elements, and 14 elements are common to both sets

Question 198482: My head is spinning I really don't know this please show how thank you so much.

Set K contains 50 elements, set J contains 66 elements, and 14 elements are common to both sets. Find n (K U J).

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Set K contains 50 elements, set J contains 66 elements, and 14 elements are common to both sets. Find n (K U J).
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Draw two intersecting circles.
Label them K and J.
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Put "14" in the intersection because 14 elements are common to both sets.
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Then the rest of K must have 50-14 = 36 elements.
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And the rest of J must have 66-14 = 52 elements.
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So the total number of elements is 52 + 14 + 36 = 102
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Cheers,
Stan H.
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