Repeat 4 times the following experiment:(adsbygoogle = window.adsbygoogle || []).push({});

We pull 3 cards from 3 normal decks (one sheet each), we note what some leaves pulled and repositioned every card in the deck from which we got.

What is the probability that we will see for first time any sword card exactly the last time you do the experiment?

N(Ω)= 52^12 and N(A)=39^9*(13^3+13^2*39+13*39^2) and i find this P(A)=N(A)/N(Ω)

but i the result its not correct what is the right way to solve this?

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# Probability cards

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