Two cards are drawn from a well shuffled pack of 52 cards one after another without replacement. Find the probability that one of these red card and the other a black card?

Explanation

Total given number of cards =52

Here, you have to find probability of choosing a ref card and a black card.

P( one red and one black)
=p( first red and second black )+p( first black
& second red)

`=frac{26}{52} times frac{26}{51}+frac{26}{52} times frac{26}{51}`
(without replacement)

`=frac{13}{51}+frac{13}{51}`


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