Question

Events A and B are mutually exclusive. Also, P(A) = 0.25 and P(B) = 0.35. What is P(A or B)?

A.0.1
B.0.25
C.0.35
D.0.6

Please explain I don't get it

Answer 1

Two events A and B are mutually exclusive this implies that if A occurs B can't occur and if B occurs A can't occur.
So
here
P( A intersection B)=0 (intersection or simultaneous occurrence or and)
We know that
\[ P(A\ or\ B)= P(A)+P(B)- P( A\ and\ B)= 0.25+0.35-0=0.60\]

Answer 2

ok thanks :)

Answer 3

@Did you understand @Amy876 ?

Answer 4

if they are mutually exclusive you can add the probabilities

Answer 5

ya i got it thanks for ur help