选择题
2007 AMC 8 Problem 21: Winning Card Pair
Two cards are dealt from a deck of four red cards labeled A, B, C, D and four green cards labeled A, B, C, D. A winning pair is two of the same color or two of the same letter. What is the probability of drawing a winning pair?
A.
2/7
B.
3/8
C.
1/2
D.
4/7
E.
5/8