Probability Question 161
Question: If A and B are two events such that $ A\subseteq B, $ then $ P( \frac{B}{A} )= $
Options:
A) 0
B) 1
C) 1/2
D) 1/3
Show Answer
Answer:
Correct Answer: B
Solution:
Since $ A\subseteq B\Rightarrow A\cap B=B\cap A=A $
Hence $ P( \frac{B}{A} )=\frac{P(B\cap A)}{P(A)}=\frac{P(A)}{P(A)}=1 $ .