MY PERCENTAGE IN CLASS X IS 64 & 65 IN 12TH , CAN U TELL ME ABOUT CHANCES TO GO IN IIMA AND HOW???

I am assuming you are from general category. Based on your overall academic profile, you will need to score 100 percentile to get a call for the next round.

All the best!

IIM A, B, C , K ,I ,L are not possible in any day even if you get 100%tile .
Its better to target the red building (FMS )or XLRI .

Some good colleges for you are :-
BIMTECH noida
CHRIST BANGLORE
XIME
LBSIM DELHI
FORE DELHI
IMI DELHI
MDI DELHI
IFMR CHANNAI
LOYOLA CHANNAI
IBS HYDERABAD
SIBM PUNE
SCMHRD PUNE
PUMBA PUNE
NIRMA AHEMDABAD
TAPMI
K J SOMAYA MUMBAI
NMIMS
SP JAIN MUMBAi
IMT ghaziabad ETC
IIM IS NOT THE END OF THE WORLD THERE ARE MANY PRIVATE COLLAGES WHICH ARE COMPETING WITH IIMs . COLLAGE  LOCATION IS ALWAYS THE  ADVANTAGE MEANS METRO !!