math

23,24,25

The oor plan of a building is shown to the right. Is it possible to start outside, walk through each door exactly once, and end up E E back outside? Justify your answer. (Hint: Think of the rooms and "outside" as the vertices of a graph, and think of the doors as the edges of the graph.) Choose the correct answer below. 0 A. It is not possible. All vertices have even degree. O B. It is not possible. Some vertioes have odd degree. 0 C. It is possible. All vertices have even degree. 0 D. It is possible. Some vertices have odd degree. Determine the number of combinations (subsets) of the following. 12 objects taken 7 at a time There are combinations of 12 objects taken 7' at a time. Decide whether the following is a statement or is not a statement. Marion, Kansas is an enjoyable city. Choose the correct answer below. 0 A. The sentence is not a statement because it is either true or false. 0 B. The sentence is a statement because it is either true or false. 0 C. The sentence is a statement because it is an opinion. 0 D. The sentence is not a statement because it is an opinion