Youâre leaving work and see your coworker struggling to start their car. You go over to find out their batteryâs dead and offer to give it a jump. Before pulling out those jumper cables and connecting batteries, you should: a) Pull your running car up to theirs and leave the car running.
There are 8 different blood types (A+, A-, B+, B-, O+, O-, AB+, AB-). The most well known and medically important blood types are in the ABO group. Even though type AB is the rarest blood type, type AB plasma can help people with any blood type. 2  So, more type AB plasma donors are always needed. 3  By giving plasma regularly you can help people with AB, O, B and A blood types.
We know that A, B, AB and O are the four blood groups that can be Rh positive or negative (viz: A+, A-, B+, B-, AB+, AB-, O+ and O-). Among them, O+ is the most common; while AB-is the rarest blood type.The detailed explanation provided here will help in better understanding of the subject.B-and B-are the rarest blood types in the world. The Bombay blood group (hh), a relatively unknown blood type, is also one of the most uncommon blood types in the world. Little is known about the Bombay blood group (hh) , one of the most uncommon blood group in the world.