How many ways can we choose 5 questions from an exam containing 12 questions

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

What is the prime factorization of 230

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)