A and B are two events. P (A) = 0.6, P (B) = 0.3 and P (A and B) = 0.1. What is the value of P (A or B) ?

Answer: The value of P (A or B) is 0.8.

Step-by-step explanation: We are given P (A) = 0.6, P (B) = 0.3 and P (A and B) = 0.1.

P (A and B) = 0.1 could be written as P (A∩B) = 0.1.

We need to find P (A or B) that is P (A∪B) = ?

We know formula,

P (A∪B) = P (A) + P (B) - P (A∩B)

Plugging values in formula, we get

P (A∪B) = 0.6 + 0.3 - 0.1

P (A∪B) = 0.9 - 0.1

P (A∪B) = 0.8.

Therefore, the value of P (A or B) is 0.8.