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Relations R(A, B) and S(A, B) contain 10 and 6 tuples respectively. What are the maximum number of tuples in R ∪ S and the minimum number o…

1357Medium DSSSB TGT Computer Science 0 replies

Relations R(A, B) and S(A, B) contain 10 and 6 tuples respectively. What are the maximum number of tuples in R ∪ S and the minimum number of tuples in R ∩ S?

A10 and 6
B16 and 0
C16 and 6
D10 and 0

Correct answer: B

Explanation

The union is largest (10 + 6 = 16) when the relations share no tuple, which is also when the intersection is smallest (0).

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