A highschool gym teacher randomly selects a group of two players from three students to demonstrate a basketball drill during class the three students consists of two girls andrea and marta and one boy davi.
The sample space of possible groups is listed below.

Let A be the event that both students the coach chooses are girls and B be the event that the first player is a boy.

What is P(A or B), the probability that the coach chooses all girls or boys first ?