Let A and B   be two non-null events such that A ⊂ B . Then, which of the following statements is…

Let A and B  be two non-null events such that AB. Then, which of the following statements is always correct?
  1. PA|BP(A)
  2. PA|B=PB-PA
  3. PA|B P(A)
  4. PA|B=1

Solution

Lets draw the venn diagram according to question, 

PAB=P(AB)P(B)=P(A)P(B)[ABAB=A]

Now, since P(B)1

PAB=PAPBPA

PA|BP(A)

Asked in: JEE Main 2019 (08 Apr Shift 1)

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