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Dear Student 
Below is the answer of your question
Answer :

We know greatest 5 digit number  =  99999 
So,
Greatest 5 digit number in which 2 appears at ten's place  =  99929 
And
We know smallest 5 digit number  =  10000
So,
Smallest 5 digit number in which 2 appears at ten's place  =  10020                      

Regards