For math I would suggest that Aditya rangan sir ,is the best in all over Ind.even I thank every student from each and an every state studying mathematics by him. not for helpful for jkssb ,also regarding for different competitive examination like ssc cgl, cpo, mts, chsl ,even regarding upsc csat .Aditya rangan is a outstanding guys.
Bhai agr 3.5-4 months baad exam ho aur abi tayaari na shru ki ho mssa graduate hua ho ..yoh itna tym min starting sa 200 posts ka andr rank laa skta insaan fresh start kr kaa.