Which of the following operator is not very selective?
(a) $nine
(b) $nin
(c) $ain
(d) None of the mentioned
(a) $nine
(b) $nin
(c) $ain
(d) None of the mentioned
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The correct answer is (b) $nin
Best explanation: The inequality operators $nin and $ne are not very selective since they often match a large portion of the index.