Answer :

A = Event of Person A hitting the target.


P(A) = 0.4


P = 1 – P(A) = 1 – 0.4


P = 0.6 (1)


B = Event of Person B hitting the target.


P(B) = 0.3


P = 1 – P(B) = 1 – 0.3


P = 0.7 (2)


C = Event of Person C hitting the target.


P(C) = 0.2


P = 1 – P(C) = 1 – 0.2


P = 0.8 (3)


Now then,



= 0.4 × 0.3 × 0.8 + 0.4 × 0.7 × 0.2 + 0.6 × 0.3 × 0.2


= 0.096 + 0.056 + 0.036


= 0.188

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