2.4. Among employees of a certain frm, 70% know Java, 60% know Python, and 50% know both languages. What portion of programmers (a) does not know Python? (b) does not know Python and does not know Java? (c) knows Java but not Python? (d) knows Python but not Java? (e) If someone knows Python, what is the probability that he/she knows Java too? (£) If someone knowrs Java, what is the probability that he/she knows Python too?

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