@lakshmip2 ,
Could you elaborate a definition for the session metric you are referring to?
In general, you may want to use just the metric Unique Visitors with the Countries dimension. If you want to know how many page views on average every visitor views, you can create a calculated metric = Page Views / Unique Visitors and add it to the table. Similarly, if you want to know how many pages every visitors view within a visit, create a metric = Page Views / Visits.