GATE CSE 2007
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MCQ (Single Correct Answer)
GATE CSE 2007
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