In a medical study, patients are classified in 8 ways according to whether they have blood type AB*, AB", A*, A¯,B*, B,o*, or o", and also according to whether their blood pressure is low, normal, or...

Extracted text: In a medical study, patients are classified in 8 ways according to whether they have blood type AB*, AB", A*, A¯,B*, B,o*, or o", and also according to whether their blood pressure is low, normal, or high. Find the number of ways in which a patient can be classified. 1. The patient can be classified in different ways.