math

posted by .

. A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different
ways can these two offices be filled from the members of the class?

  • math -

    ways to arrange 12 in groups of 2:
    binomial coefficient
    C(12,2) = 12!/[2!*10!]
    = 12*11/2 = 66
    or use Pascal's triangle, third element in 13th row.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. MATH Prob.

    A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?
  2. math

    A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?
  3. Math-157

    A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?
  4. MATH Help!

    Can some one help?? A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?
  5. college statistics

    Three members of a club will be selected to serve as officers. The first person selected will be president, the second person will be vice-president and the third will be secretary/treasurer. How many ways can these officers be selected …
  6. algebra

    How many ways can the offices of president, vice-president, treasurer, secretary, parliamentarian, and representative be filled from a class of 30 students?
  7. Algebra

    A club with 35 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many ways can this be done?
  8. algebra

    A club with 33 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many ways can this be done?
  9. statistics

    there are 35 members in a sports club. If an election is to be held to pick 4 officers; president, vice president, treasurer, and secretary, how many different lists of officers could result?
  10. Algebra

    A club has 4 members. From these members, the positions of president, vice-president, and treasurer have to be filled. In how many different ways can these 3 positions be filled?

More Similar Questions