[size=200]Two red cards have an A on the back,[br]and two red cards have a B on the back.[br]Two green cards have an A on the back,[br]and one green card has a B on the back.[br]Shuffle the cards and select one red and one green at random.[br][br]Will both cards have an A on the back?[/size]

[size=200]Calculation[br][br]Red Card: A1, A2, B1, B2[br]Green Cards: A3, A4, B3[br][br][b]A1,A3 A1,A4[/b] A1,B3[br][b]A2,A3 [/b][b]A2,A4[/b] A2,B3[br]B1,A3 B1,A4 B1,B3[br]B2,A3 B2,A4 B2,B3[br][/size]