inance class with 26 students. The following information is given: 1) 13 students take both math and finance 2) 11 students take both accounting and math 3) 16 students take both accounting and finance 4)  6 students take all 3 classes How many students are enrolled in at least one of the classes?

Part 4: Suppose that 53 of the 55 Computer Science students of San Sebastian College, Manila are taking at least one of the mathematics subjects Algebra, Trigonometry and Calculus. See the figure below for more details: 24 taking Algebra, 26 taking Trigonometry, 20 taking Calculus, 5 taking Algebra and Trigonometry, 7 taking Algebra and Calculus, 8 taking Trigonometry and Calculus. a. Find the number of students who are taking all three mäthematics subjects. b. Fill in the correct number of students in each of the eight regions of the Venn diagram. c. Determine the number of students who are not taking any of the three mathematics subjects? d. How many students are taking Algebra as their only mathematics subject? e. How many students were taking Calculus and Trigonometry but not Algebra?

In a certain suburban neighborhood, 20 families own minivans, 27 families own BMW sedans, and 9 families own neither a minivan nor a BMW sedan. There are are 40 families in the neighborhood. a. How many families own a minivan or a BMW sedan? b. How many families own a minivan and a BMW sedan? Thank you!

You want to plan a trip to visit four of the following cities: Athens, Barcelona, Dublin, Montreal, Paris, Rome and Vienna. An itinerary consists of a list of four cities to be visited, in order.   How many different itineraries are there?