Question

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Answer 1

1. it is a set because it is definite quantity.
2. it is not a set because the term 'good' is not well defined.
3. it is not a set because the term 'rich' is not defined.
4. it is a set because it is a definite quantity.
5. it is a set because here natural number less than 1000 is definite.
6. it is a set because it a definite quantity.

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