Let P be a probability function on S = {X 1 , X 2 , X 3 ) if P(X 1 )= 1 / 4 and P(X 3 ) = 1 / 3 then P(X 2 ) is equal to :

CA Foundation · Quantitative Aptitude · MTP · September 2025
Let P be a probability function on S = {X 1 , X 2 , X 3 ) if P(X 1 )= 1 / 4 and P(X 3 ) = 1 / 3 then P(X 2 ) is equal to :
(A) A. 5/12
(B) B. 7/12
(C) C. 3/4
(D) D. none of these

Suggested Answer and Working Notes:

Correct Answer: Option (A)

A. 5/12

Topics: Part-C: Statistics

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