Thread: Cardinality

I am very confused on how to answer these questions. I am supposed to find the cardinality of each of these sets.

1) non zero
2) {non zero}
3) {nonzero, {nonzero}}
4) {nonzero, {nonzero}, {nonzero, {nonzero}}}

Originally Posted by lm6485

I am very confused on how to answer these questions. I am supposed to find the cardinality of each of these sets.
1) non zero
2) {non zero}
3) {nonzero, {nonzero}}
4) {nonzero, {nonzero}, {nonzero, {nonzero}}}

That cannot be the complete question because as written it makes no sense whatsoever.
Non-zero what?

Sorry I was given the wrong problem. Instead of non zero's they are supposed to be null or empty sets.

Originally Posted by lm6485

Sorry I was given the wrong problem. Instead of non zero's they are supposed to be null or empty sets.

has no elements.

has one element.

has two elements.