The sale of golf balls is largely due to golfers losing an average of 4.5 balls per 18-hole round. For lost golf balls find what you are asked for.

What is the probability that the number of lost balls is no more than five? in 15 holes.

What is the probability that the number of lost balls is at least 9? in 20 holes.

In 25 holes, P(7 > X > 9)=

What is the probability that the number of lost balls is between seven and nine?