sir as we know that jee mains is approaching one of my friends is from narayana iit academy he has joined test series and given me 16 test papers of jee mains and 10 of advance level will it be sufficient if i solve those 16 jee mains paper for jee mains.

dear prashant 
yes , u can try it , but frst of all complete at least the imp chapters of jee mains , and then u can start with previous year paper . 
and also make sure before jee mains at least u have to complete 10 mock test of jee main level completely . 

ALL THE BEST 
REGARDS