Roughly how many American have type o+ blood?

In the U.S., 38% of the population have O-positive blood, making it the most common blood type.

Explanation:

According to the American Red Cross, the following statistics show the most common blood types in the U.S.: African American: 47% O-positive, 24% A-positive, and 18% B-positive Latin American: 53% O-positive, 29% A-positive, and 9% B-positive

it's false.

"every person has their limitations which prevent us from accomplishing something. some are better than mathematics for example and some are worse. those people who are worse might never be able to become mathematicians, but that does not mean that they would not be great at doing something else."

answerrunning;