![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Hailey has 10 blocks: 2 red, 4 blue, 3 yellow and 1 green.
\The probability that a randomly chosen block will red is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a9a8c7adb716cc3f0e60594da69c28d9.png\")
.
The probability that a randomly chosen block will yellow is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=586b5348a98e37d35b03290906b29872.png\")
.
The probability that a randomly chosen block will be either red or yellow is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=be5ecfce655c4458bd5f3e08ad6309f5.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3adb3f3bd31c96e6b510b60860012f44.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ab70be843008b1ebd25d5fd6c0fe5360.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4f63973f7fbddb278f7579f2eef16e0b.png\")
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The option H is correct answer.