In the figure given below A and B are two sets, such that Pr[A and B]=1/3, Pr[A]=2/4, Pr[B]=3/4.
Figure 16-1

-Refer to Figure 16-1.Pr[A or B] will be:
A)5/6.
B)11/12.
C)1/6.
D)3/4.

Name: In the figure given below A and B are two sets, such that Pr[A and B]=1/3, Pr[A]=2/4, Pr[B]=3/4. Figure 16-1 -Refer to Figure 16-1.Pr[A or B] will be: A)5/6. B)11/12. C)1/6. D)3/4.
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Question

In the figure given below A and B are two sets, such that Pr[A and B]=1/3, Pr[A]=2/4, Pr[B]=3/4.
Figure 16-1
 
-Refer to Figure 16-1.Pr[A or B] will be:
A)5/6. 
B)11/12. 
C)1/6. 
D)3/4.

Quizplus · Accepted Answer

Using the formula for probability of union of two events:
Pr[A or B] = Pr[A] + Pr[B] - Pr[A and B]
= 2/4 + 3/4 - 1/3
= 11/12

In the Figure Given Below a and B Are Two