Question 968723
Choose any pattern you want which is neither of those specified types.  


Not a common difference for successive terms;
not common ratio for successive terms;
The pattern is for you to choose.  How do you want the successive terms to change?  Try to think of several way of changing from 10 to 2.  Do you want to examine differences, or do you want to examine ratios?  Note that whichever you choose to start with, the ratio or difference MUST NOT be constant among the terms, but must change according to a pattern.