Probability student who buys textbook attends every lecture

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A survey of students on a highly popular course found that 54% buy the textbook recommended for the course, and that 55% attend every lecture. However, 21% of the students neither go to all the lectures nor buys the recommended textbook. What is the probability that a randomly chosen student who buys the textbook attends every lecture?

Reference no: EM13143014

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