Question: Do not actually solve the questions. First I need to know what problem it is for example (Binomial probability distribution, NB, PMF, CDF, COMBINATORICS, conditional

Do not actually solve the questions. First I need to know what problem it is for example (Binomial probability distribution, NB, PMF, CDF, COMBINATORICS, conditional problem, independence, RV`s, and poisson distribution..etc ) Second please just tell relevant formulas and ideas that would use to solve the questions. ASAP will thumbs up thank you.

2) If 60% of coders know Java, 20% know R, and 30% know Python, 5% know only Java and R, 9% know only Python and R, and 10% know only Java and Python, and 2% know all 3 what is the probability that a coder selected at random won't know any of these three programming languages?

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