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14.Probability
normal
If $A$ and $B$ are two events, then the probability of the event that at most one of $A, B$ occurs, is
A
$P(A' \cap B) + P(A \cap B') + P(A' \cap B')$
B
$1 - P(A \cap B)$
C
$P(A') + P(B') + P(A \cup B) - 1$
D
All of the these
(IIT-2002)
Solution
(d) It is obvious.
Standard 11
Mathematics