There are 10 doors to a coliseum. In how many ways can a person go in and out if one can enter any door but leave using another door?.

You can reduce glare in snowy weatuer by?

When was napoleon banopart born?

At work claire has a deadline that is rapidly approaching. as she works, she finds that she is doing more work in a shorter amount of time than usual. she thinks mor quickly, and her senses and memory are sharper. what is responsible for claire working more effectively?