Hi, just to make sure I got the right idea.

In how many ways can the letters of the word MERETRICIOUS be arranged in a line?Since there are 2E, 2I and 2R. Would the first answer be 12! / (2! 2! 2!)?

Would the probability be (10!/(2! 2! 2!) / (12!/ (2! 2! 2!) as a result?

What is the probability that an arrangement begins with M and ends with S.

Thanks for any clarification.