I have 30 photos to post on my website. I'm planning to post these on two web pages, one marked "Friends" and the other marked "
Family". No photo may go on both pages, but every photo will end up on one or the other. Conceivably, one of the pages may be empty. Please answer these two questions:__________ a. In how many ways can I post these photos to the web pages if the order in which the photos appear on those pages matters?
b. In how many ways can I post these photos to the web pages if the order in which the photos appear on those pages does not matter?