Probability Ques 40

If $E$ and $F$ are events with $P(E) \leq P(F)$ and $P(E \cap F)>0$, then which one is not correct? (1998, 2M)

(a) occurrence of $E \Rightarrow$ occurrence of $F$

(b) occurrence of $F \Rightarrow$ occurrence of $E$

(c) non-occurrence of $E \Rightarrow$ non-occurrence of $F$

(d) None of the above

Show Answer

Answer:

Correct Answer: 40.(c)

Solution:

Formula:

Addition theorem of probability :

  1. It is given that, $P(E) \leq P(F) \Rightarrow E \subseteq F$

and $\quad P(E \cap F)>0 \Rightarrow E \subset F$

(a) occurrence of $E \Rightarrow$ occurrence of $F$

(b) occurrence of $F \Rightarrow$ occurrence of $E$

(c) non-occurrence of $E \Rightarrow$ occurrence of $F$

Hence, option (c) is not correct.



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