I need help with steps for letter b-d only.

3. we nave a group or ten people. we want to select a group or tour people tor an event consisting of a role A, a role B, a role C, and a role D.(10 points) a. In how many ways can we fill these four roles? b. In how many ways can four people be chosen for the event if it does not matter who gets which role? c. Four ofthe people are Sara, Mike, John, and Anya. What is the probability that Anya gets role A, Mike gets role B, Sara gets role C and John gets role D? Write each answer using fraction. d. What is the probability that we select Sara, Mike, John, and Anya without considering they role? Write each answer using fraction