go for paduka and scanner

it is also good in my opinion

paduka is best

TULSAIN NICE

Padhuka's book is best. it contains past year questions too.

Tulsian is the best and easy to understand by anyone.

IS IT GOOD FOR PRACTICAL PROBLEM OF COSTING AND FM ( PADHUKA SIR). HOW IS IT LANGUAGE PLEASE SUGGEST ME.

kalra sir's book.....

Paduka and past papers. If any of your friend has Rakesh Agarwal sirs book(Vidarbha Professional Academy) Nagpur then that is enough for Costing and Vinod Reddy sirs (AS Foundation) for OR.