4. Let A, B be finite sets. Recall that |A B| = |A| + |B| - |A B|. Find a similar formula for |A B C| using formal proof. thank q for who helping.......
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Originally Posted by cclia 4. Let A, B be finite sets. Recall that |A B| = |A| + |B| - |A B|. Find a similar formula for |A B C| using formal proof. thank q for who helping....... Hello, So consider Now use the formula you're given : This gives
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