Question

State whether or not each of the following describes as well defined set and give reason.
1- All the tall students in your school.
2- All the commerce students in your school.
3- All the rich industrialists in your country.
4- All the even numbers greater than 7 but less than 23.
5- Collection of odd numbers less than 20.
6- Collection of medicinal plants in your country.
7- Collection of the months of a year having five mondays.
8- Collection of all public schools in your city.
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Answer 1

Answer:

yes and rarely no

yes it is right