Question

A golfer can hit a ball past 100 yards about 15% of the time. a. What is the probability that he hits the ball farther than 100 yards on his
fourth attempt?)
b. What is the probability that he hits the ball farther than 100 yards within his
first three attempts?
c. He is unlucky and is not able to hit a ball farther than 100 within his first
three attempts. On average, how many hits will it take him to hit a ball
farther than 100 yards?