You have learned that 8% of the students in your school are left-handed. Suppose you stop students

Question:

You have learned that 8% of the students in your school are left-handed. Suppose you stop students at random and ask whether they are left-handed.
a. What is the probability that the first left-handed person you find is on your third try?
b. What is the probability that you will find exactly one left-handed person in three tries?