Question: If A and B are two sets such that |A| = 40, |B| = 30 and |A B| = 10 then |A B| is.............. a.

If A and B are two sets such that |A| = 40, |B| = 30 and |A B| = 10 then |A B| is.............. a. 60 b. 70 c. 80 d. 10

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