![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
There are 10 numbers 1,2,3,4,5,6,7,8,9,10.
\Prime number is a number that can evenly divided by 1 and itself.
\Prime numbers are 2,3,5,7.
\Probability of getting prime number is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a595e0b7c8b868988bdbe36c57910f49.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6a1c8291f8f1fa865246b5947001ec1c.png\")
(Multiply numerator and denominator by 10)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d6626882ec6a76b1e144d09fd0ec0939.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=296b7a4ea3f79f87c44b6e8c4ffee5df.png\")
)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=239aaeb2759b8bd2e1a83a08e10f2735.png\")
(Write fraction as percent)
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The probability of given event is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f19292c7a575987eea7b826cc4c7358f.png\")
.