From a deck of cards, three cards are drawn on by one without replacement. Find the probability that each time it is a card of spade.

Explanation

A= shows in 1st draw An ace


B= shows in 2nd draw An ace


C=shows in the 3rd draw an ace



`P(A)=frac{13}{52}=frac{1}{4} `


`P(B / A)=frac{12}{51}=frac{4}{17} `


`P(C / A cap B)=frac{11}{50} `


`therefore P(A cap B cap C) `


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