Solving a Simple Probability Question | Help Needed

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A user seeks assistance with a probability problem linked in an image. Respondents note that the question appears to be a homework assignment and emphasize the importance of showing work to receive help. They also suggest posting the question directly in the thread for easier reference. This approach encourages more effective collaboration and support from the community. Clear communication of the problem is essential for obtaining assistance.
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Hi every body. Could anyone help me to solve this problem
http://img78.imageshack.us/img78/5946/untitledgw2.jpg
REGARDS
 
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This looks like a homework problem. Please note that you must show some work before we can help you. Also, it is easier if you post the question in the thread, instead of linking to it, to enable people who want to help you to refer to the question quickly.
 
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