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VITEEE 2017 Solved Paper
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© examsnet.com
Question : 101
Total: 125
A and B are events such that P (A ∪ B) = 3/4, P (A ∩ B) = 1/4 , P
(
−
A
)
= 2/3 then P (
−
A
∩ B) is
5/12
3/8
5/8
1/4
Validate
Solution:
P (A ∪ B) = P (A) + P (B) - P (A ∩ B) ;
⇒
3
4
= 1 -
P
(
−
A
)
+ P (B) -
1
4
⇒ 1 = 1 -
2
3
+ P (B) ⇒ P (B) =
2
3
;
Now . P (
−
A
∩ B) = P (B) - P (A ∩ B) =
2
3
−
1
4
=
5
12
© examsnet.com
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