.
The probability under the question is
P = = 0.4. ANSWER
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To see many other similar solved problems, look into the lessons
- Probability for a computer to be damaged by viruses
- Advanced probability problems from the archive
in this site.
Also, you have free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Solved problems on Probability",
where you can find TONS of solved problems on Elementary Probability theory.
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.