Tell this is set or not. Give reason for ur answer.
D) The collection of all intelligent girls in your class.
E) The collection of all composite numbers.

Dear student, 
I am giving the solution for question (D) only for other query kindly ask in another thread 
A set is a well-defined finite collection of distinct objects, considered as an object in its own right
From the given data, we can't find the exact no.of girls in the class which are intelligent. So, it is not well-defined.
Hence, the given set is not a well-defined collection.

Looking forward to hear from you soon 
Regards 

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