A bag contains 5 red & 3 black balls and the second one 4 red and 5 black balls. One of is selected at random and a draw of two balls is made from it. What is the chances that one of them is red and the other is black?  Choose the correct choice from the following answers.
A) .5456 B) 1.5456 C) 2.5456 D) 3.5456 E) 4.5456
secet 1 bag from two=1/2   from 1 st bag=5c1*3c1/8c2=15/28   from 2nd bag=4c1*5c1/9c2=20/36   toatl p(s)=1/2(15/28 + 20/36)=.5456   .5456NSWER:.5456
<result>A</result>
A bag contains 5 red & 3 black balls and the second one 4 red and 5 black balls. One of is selected at random and a draw of two balls is made from it. What is the chances that one of them is red and the other is black?