issue in displaying data from database

sasi jj

hi am newbie to datatables , please help me to overcome this issue while am displaying a database using datatables in every filter condition 10,25,50,100 the first page have one row missing i mean on 10 it shows 9 row , on 25 it shows 24 when i move to next page that 2,3,4,5... on pagination it shows correctly that on 10 it shows 10 rows on 25 it shows 25