CAT FILE WITH EXCEPTION ROW ON SOLARIS

Sometimes, you need to view content of a file with exception some row.
For example, you have file named test.txt which content like below :

1111

2222

3333

4444

#5555

#6666

You want :
(1) Display all row except first row
(2) Display all row except row which have sign "#"

What command that you can use ?

(1) cat test.txt | grep -v "1"  or 

      cat test.txt | grep -v "11"  or 

      cat test.txt | grep -v "111" or 

      cat test.txt | grep -v "1111"

(2) cat test.txt | grep -v "#"  

Hopefully it will help you :)