Question

A deck of cards contin 26 black cards and 26 red cards. if you are dealt two cards, what is the probability one is black and one is red? answer

Answer 1

$|\Omega|=C(52,2)=\dfrac{52!}{2!50!}=\dfrac{51\cdot52}{2}=1,326\\ |A|=26\cdot26=676\\\\ P(A)=\dfrac{676}{1,326}=\dfrac{26}{51}\approx51\%$

Answer 2

The probability would be (1/2),(26/51),(50/50)