A can hit a target 4 times in 5 shots, B 3 times in 4 shots and C 2 times in 3 shots. Calculate the probability that $$\begin{array}{1 1} ((i) \: A,B,C\: all \: may \: hit. \\ (ii)\: Any\: two \: of \: A,B\: and \: C\: will\: hit \ the \: target. \\ (iii)\: None \: of\: them \: will \: hit \: the \: target.\\(iv)None \:of\:hem\:will\:hit\:the\:target. \end{array}$$

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