Question

State wheather each of the following collection is a
well-defined set. Give
a reason for each answer.

• {a pupil in my class who has two brothers}
• {a TV actor who is well liked by my class fellows}
• {countries in the world}•{stars in the sky}
• {a textbook used in my school}
​

Answer 1

Answer:

option a,b,c,d are correct but option number e is not correct

Answer 2

Answer:

1) yes

2) no

3) no

4) no

5) yes

6) no