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In this question the question just simple and based on the condition that σ(Number<3000)(Student) ,according to this, in the Number Column count the value which is less than 3000.
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Basics of Sets and Relations #5
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In this question the question just simple and based on the condition that σ(Number<3000)(Student) ,according to this, in the Number Column count the value which is less than 3000.