TAILIEUCHUNG - Sat - MC Grawhill part 37

The lessons are so unbelievably clear, and well organized, and they are always are followed up with lots of practice so you know you get the concepts. It also covers EVERYTHING, and not just a bunch of test-taking tricks like the Princeton Review and RocketReview books do (don't be fooled by the slick bells and whistles! :) )The Gruber and Barron's books are very comprehensive also, but they are much less clear, and a lot of the review isn't really relevant to the SAT, so that part is kind of a waste of time | 350 McGRAW-HILL S SAT Lesson 5 Counting Problems The Fundamental Counting Principle Some SAT questions ask you to count things. Sometimes it s easy enough to just write out the things in a list and count them by hand. Other times though there will be too many and it will help to use the Fundamental Counting Principle. Using Venn Diagrams to Keep Track of Sets Some counting problems involve overlapping sets that is sets that contain elements that also belong in other sets. In these situations Venn diagrams are very helpful for keeping track of things. To use the Fundamental Counting Principle FCP you have to think of the things you re counting as coming from a sequence of choices. The Fundamental Counting Principle says that the number of ways an event can happen is equal to the product of the choices that must be made to build the event. Example How many ways can five people be arranged in a line You might consider calling the five people A B C D and E and listing the number of arrangements. After a while though you ll see that this is going to take a lot of time because there are a lot of possibilities. Not to mention that it s really easy to miss some of them. Instead think of building the line with a sequence of choices first pick the first person then pick the second person etc. There are five choices to make so we ll have to multiply five numbers. Clearly there are five people to choose from for the first person in line. Once you do this though there are only four people left for the second spot then three for the third spot etc. By the Fundamental Counting Principle then the number of possible arrangements is 5 X 4 X 3 X 2 X 1 120. Example How many odd integers greater than 500 and less than 1 000 have an even digit in the tens place This seems a lot harder than it is. Again think of building the numbers in question. All integers between 500 and 1 000 have three digits so building the number involves choosing three digits so we will multiply three numbers to

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.