Question 1200909: Nine people (Ann, Ben, Cal, Dot, Ed, Fran, Gail, Hal, and Ida) are in a room. Five of them stand in a row for a picture.
In how many ways can this be done if Ben is to be in the picture?
In how many ways can this be done if both Ed and Gail are in the picture?
In how many ways can this be done if neither Ed nor Fran are in the picture?
In how many ways can this be done if Dot is on the left end and Ed is on the right end?
In how many ways can this be done if Hal or Ida (but not both) are in the picture?
In how many ways can this be done if Ed and Gail are in the picture, standing next to each other?
In how many ways can this be done if Ann and Ben are in the picture, but not standing next to each other?
Answer by ikleyn(52879)   (Show Source):
You can put this solution on YOUR website! .
Do not pack so many questions in one post.
It is AGAINST your interests // and against the rules of this forum, too.
Be prudent and avoid working against your own interests.
It is like jumping upside down from a tower into an empty concrete pool with no water.
Packing so many questions in one post is not a sign of a deep mind.
In opposite, it is the sign that a person can not or don't want to make his job,
wishing to reload making his job on the shoulders of other people.
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