Mathematics

posted by .

Among 500 freshmen pursuing a business degree at a university, 313 are enrolled in an economics course, 205 are enrolled in a mathematics course, and 153 are enrolled in both an economics and a mathematics course. What is the probability that a freshman selected at random from this group is enrolled in
(a) An economics and/or a mathematics course?
(b) Exactly one of these two courses?
(c) Neither an economics course nor a mathematics course?

  • Mathematics -

    So out of 500 students, we know what 671 of them are doing. I think there are many unregistered freshman taking classes at that college. ...

    The numbers do not add up.

  • Mathematics -

    I may have read this wrong, of course. After reading it again, I thought differently.

    There are 153 students taking both economics and math. That means there are:
    205 - 153 = 52
    There are 52 students only taking math, but not economics.

    313-153 = 160
    So 160 students are taking economics without math.

    So out of 500, we have:
    160 only taking economics.
    52 only taking math.
    153 taking both.

    That is 365 out of 500 taking at least one of the classes. How many aren't taking math or economics?

    Now, it's just a matter of percentages.

  • Mathematics -

    Half of a third of x equals a fourth of y plus a fifth of y. If x = 27, what is the value of y?

  • Mathematics -

    4 and 5

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    of all 3-to 5-year- old children, 56% are enrolled in school. If a sample of 500 such children is randomly selected, find the probability that at least 250 will be enrolled in school.
  2. com155

    I am enrolled in a Personal Finance class that is teaching me the skills I will need to be financially successful. (PROGRESSIVE PRESENT) Is this the correct verb tense?
  3. english

    Write one paragraph of eight to twelve sentences informing your fellow students of your reasons for wanting to earn your diploma in the program in which you're enrolled, particularly in terms of your career goals. For example, why …
  4. English

    I left out three sentences on the use of "enrol" 1) I signed up for/I enrolled in the drama course. I enrolled a technical high school in 1998. 2) I joined the Scouts in 1998. I enrolled in the faculty (at university?
  5. Lincoln College Of New En

    it has been found that 85.6% of all enrolled college and university students in the U.S. are undergraduates. A random sample of 500 enrolled college students in a particular state revealed that 420 of them were undergraduates. Is there …
  6. Math

    Of the 103 people enrolled in mathematics class, 91% are present. How many are present?
  7. math

    In a local school 34 students are enrolled in a math class, 85 are enrolled in an english class, 58 are enrolled in an art class, and 54 are enrolled in a history class. Construct a pie chart with this data. What is the central angle …
  8. Math

    At a school of 1400 students, 800 are currently enrolled in English, 740 are enrolled in mathematics and 325 are enrolled in both subjects. How many students are enrolled neither English nor Mathematics?
  9. mathematical methods for economics

    in a class of 300 students,they were given mathematics test in three subjects namely,economics,statistics and mathematics,90 students failed in economics,100 failed in statistics,96 failed in mathematics,60 failed in economics and …
  10. Maths

    1) Suppose of the 4,000 freshmen at a college everyone is enrolled in a mathematics or an English class during a given quarter. If 2,000 are enrolled in a mathematics class, and 3,000 in an English class, how many are enrolled in both …

More Similar Questions