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GATE | Gate IT 2007 | Question 63
Consider a selection of the form σA≤100(r), where r is a relation with 1000 tuples. Assume that the attribute values for A among the tuples are uniformly distributed in the interval [0, 500]. Which one of the following options is the best estimate of the number of tuples returned by the given selection query ?
(A)
50
(B)
100
(C)
150
(D)
200
Answer
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