how many Regional or dialect of bangla language exist in Bangladesh?
How many Bengali dialects are there in Bangladesh?
Bangladesh has a number of dialects which may be clustered into four groups: (1) North Bengal dialects including those of dinajpur, rajshahi, bogra and pabna; (2) Rajbanshi, the dialect of rangpur; (3) East Bengal dialects which include those of a) Dhaka, mymensingh, Tripura, barisal and sylhet, as well as b) faridpur, jessore and khulna, and (4) South Bengal dialects including those of chittagong and noakhali and the dialects of chittagong hill tracts, such as those spoken by chakmas and murongs. 