Question

Which of the following is not a subset of {1, 2, 3}?

Answer 1

??

Answer 2

I dnt see any options.

Answer 3

Which of the following is not a subset of {1, 2, 3}?

a. Ø
b. {0}
c. {1, 2, 3}

Answer 4

what is a. is that the notation for empty or null set?

Answer 5

I have no idea thats why im here.

Answer 6

is it this?

Answer 7

Yeah.

Answer 8

it means null set or empty set. this is subset of any set.
so it is a subset of {1,2,3}.
any set containing all the elements as the other set is also a subset.
so {1,2,3} is a subset of {1,2,3}.
Nw see that u dnt hav 0 in the set given. so {0} is not a subset of {1,2,3}.
Is it clear?