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Question Number 43288 by rahul 19 last updated on 09/Sep/18

Commented by rahul 19 last updated on 09/Sep/18

Commented by rahul 19 last updated on 09/Sep/18

I want to know why P((A/A_2 )) = (7_C_2  /8_C_3  ) ?  This is related to Total probability  theorem.......

$$\mathrm{I}\:\mathrm{want}\:\mathrm{to}\:\mathrm{know}\:\mathrm{why}\:\mathrm{P}\left(\frac{\mathrm{A}}{\mathrm{A}_{\mathrm{2}} }\right)\:=\:\frac{\mathrm{7}_{\mathrm{C}_{\mathrm{2}} } }{\mathrm{8}_{\mathrm{C}_{\mathrm{3}} } }\:? \\ $$$$\mathrm{This}\:\mathrm{is}\:\mathrm{related}\:\mathrm{to}\:\mathrm{Total}\:\mathrm{probability} \\ $$$$\mathrm{theorem}....... \\ $$

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