
Edward A. answered 10/12/19
High School Math Whiz grown up--I've even tutored my grandchildren
Kim, what is the cardinality (or “how many items”) in the set
{1, 2, ..., 1110}
Next, what is the cardinality of the set
{1, 2, ..., 210}
Finally, subtract the second from the first.
if you have any questions, please ask.