Let Ω be the sample space and A⊆Ω be an event.
Given below are two statements:
(S1): If P(A)=0, then A=ϕ
(S2): If P(A)=1, then A=Ω
Then
Explanation
Let Ω={1,2,3,4,5,6} i.e., they are outcome of throwing a dice.
Let A= Getting a number 7
Now, P(A)=Total casesFavourable cases=60=0
But A=ϕ
⇒S1 is true.
B= Getting a number < 7
P(B)=Total casesFavourable cases
⇒P(B)=66=1
Since, B=Ω
⇒S2 is true.
Explanation
Let Ω={1,2,3,4,5,6} i.e., they are outcome of throwing a dice.
Let A= Getting a number 7
Now, P(A)=Total casesFavourable cases=60=0
But A=ϕ
⇒S1 is true.
B= Getting a number < 7
P(B)=Total casesFavourable cases
⇒P(B)=66=1
Since, B=Ω
⇒S2 is true.