Question

A and B are two events.


P(A)=0.25 , P(B)=0.5 and P(A and B)=0.15 .


What is the value of P(A or B) ?





0.15


0.25


0.60


0.90

Answer 1

Answer:

0.60

Step-by-step explanation:

Answer 2

Answer: The value of P(A or B) =0.60

Step-by-step explanation:

Given: A and B are two events.

P(A)=0.25 , P(B)=0.5 and P(A and B)=0.15

We know that the value of P(A or B) is given by the formula :

$\text{P(A\ or\ B)}=\text{P(A)+P(B)}-\text{P(A\ and\ B)}\\\\\Rightarrow\ \text{P(A\ or\ B)}=0.25+0.5-0.15\\\\\Rightarrow\ \text{P(A\ or\ B)}=0.60$

Hence, the value of P(A or B) =0.60