Question

There are four blood types, A, B,AB, and O. Blood can be also be Rh+ and RH -. Finally,a blood donor can be classified as either male or female. How many differents ways can a donor have his or her blood

Answer 1

The total number of ways possible are,

$\begin{gathered} Total\text{ ways = 4 }\times\text{ 2 }\times\text{ 2 } \\ Total\text{ ways = 16} \end{gathered}$

Where,

4 = 4 blood groups

2 = 2 Rhesus factors

2 = Gender

Thus there are 16 ways possible.