The most common blood group most probably is O+ or even B+
O positive is the most common blood group in India.
The blood group that is most common is 0+. It is a universal blood type.
Group O is the most common, followed by A, then B, then AB.
Blood group A is the most common bloodtype in Europe.
'O' is the most common.
Blood types go into four major categories. Them being-Group A, Group B, Group AB, Group O.The most common blood type is O positive.
I think it's B+
a pos. sue gray