NCERT solutions for class 12 maths chapter 13 probability-Exercise:
13.1
Question:1 Given that and are events such
that and find and
Answer:
It is given that and
Question:2 Compute if and
Answer:
It is given that and
Question:3 If and find
(i)
Answer:
It is given that P(A)=0.8, P(B)=0.5 and P(B|A)=0.4
,Question:3 If and find
(ii)
Answer:
It is given that and
Question:3 If and find
(iii)
Answer:
It is given that
,Question:4 Evaluate if and
Answer:
Given in the question and
We know that:
Use,
, Question:5 If and , find
(i)
Answer:
Given in the question
and
By using formula:
Question:5 If and find
(ii)
Answer:
It is given that -
We know that:
13.1
Question:1 Given that and are events such
that and find and
Answer:
It is given that and
Question:2 Compute if and
Answer:
It is given that and
Question:3 If and find
(i)
Answer:
It is given that P(A)=0.8, P(B)=0.5 and P(B|A)=0.4
,Question:3 If and find
(ii)
Answer:
It is given that and
Question:3 If and find
(iii)
Answer:
It is given that
,Question:4 Evaluate if and
Answer:
Given in the question and
We know that:
Use,
, Question:5 If and , find
(i)
Answer:
Given in the question
and
By using formula:
Question:5 If and find
(ii)
Answer:
It is given that -
We know that:
