discrete math

[lean hill]

Use definition of set X has the same cardinality as set Y prove that Card(R − {2}) = Card(R − {0}). (discrete math)

[rustic glen]

!status

[main temple]

What step are you on?
1. I don't know where to begin.
2. I have begun but got stuck midway.
3. I got an answer but I was told that it's wrong.
4. I got an answer and would like my work checked.
5. I have a question about someone else's work/solution.
6. I have completed the problem and don't need help anymore. Thank you.
7. None of the above

[lean hill]

1

[rustic glen]

Do you know definition of "same cardinality"?

[lean hill]

i can't understand it

[autumn nimbus]

You only need to defien bijection between two sets.

which maps 0 to 2,for else, maps to itself

[next wolf]

.close