Can y’all please help me with this

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

Which of the following is the result of expanding the series

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart