How many Muslims are there in India?
161 million Muslim (13.5% of India population), per Pew Forum study as of Oct 2009. see link below.
Indian Muslims don't face any problems in India. They practice their ritual worships freely with no problems. India is a democratic country and don't oppress Muslims. They may have side problems regarding marriage rules and unavailability of many mosques. India is having the world largest percentage of Muslims in a non Islamic country (over 10%).
Muslims in India (although they are minority) are around 10 times Muslims in Malaysia (although they are majority). According to Pew Forum study as of oct 2009, Muslim population in India is 161 millions (13.4% of total population) while Muslim population in Malaysia 16.6 millions (60.4% of total population).