A jar contains 4 black and 3 white balls. If you pick two balls at the same time, what's the probability that one ball is black and one is white?
A. 2/7
B. 5/7
C. 4/7
D. 3/7
E. 1/2![]()
A. 2/7
B. 5/7
C. 4/7
D. 3/7
E. 1/2