ProbabilityHard
Question
A problem in mathematics is given to three students A, B, C and their respective probability of solving the problem is
and
. Probability that the problem is solved is
and
. Probability that the problem is solved isOptions
A.

B.

C.

D.

Solution
P(E1) =
, P(E1) =
and P(E) =
; P(E1 ∪ E2 ∪ E3) = 

, P(E1) =
and P(E) =
; P(E1 ∪ E2 ∪ E3) = 

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