Find the ways to choose a president and a secretary, Mathematics

Assignment Help:

Q. There are 10 students on the school debating team. How many different ways can the team choose a president and a secretary?

Ans.

There are 10 choices for the president because every student on the team might be chosen for this position. Once the president is chosen, there are 9 students to choose from for the Secretary.

1462_Find the ways to choose a president and a secretary.gif

We can word this as: There are 10 choices for President AND 9 choices for Secretary. So, there are ways for the team to pick their President and Secretary. In this example there were 2 students chosen from 10.

In general, if r objects are chosen from n, then the number of possible permutations, denoted nPr, is

50_Find the ways to choose a president and a secretary1.png

This formula can be written in terms of factorials. Consider a permutation of six objects out of 10. There are 10 ways to choose the first object, 9 ways to choose the second, and so on until all six objects have been selected.

2107_Find the ways to choose a president and a secretary2.gif

In general,

1113_Find the ways to choose a president and a secretary3.gif


Related Discussions:- Find the ways to choose a president and a secretary

Ordinary and partial differential equations, A differential equation is ter...

A differential equation is termed as an ordinary differential equation, abbreviated through odes, if this has ordinary derivatives in it. Similarly, a differential equation is term

Class limits and class boundries, Class limits These are numerical va...

Class limits These are numerical values, which limits uq extended of a given class that is all the observations in a provided class are expected to fall in the interval which

Determine boolean conjunctive query are cyclic or acyclic, Are the followin...

Are the following Boolean conjunctive queries cyclic or acyclic? (a) a(A,B) Λ b(C,B) Λ c(D,B) Λ d(B,E) Λ e(E,F) Λ f(E,G) Λ g(E,H). (b) a(A,B,C) Λ b(A,B,D) Λ c(C,D) Λ d(A,B,C,

Proof of the derivative of a constant, Proof of the Derivative of a Constan...

Proof of the Derivative of a Constant : d(c)/dx = 0 It is very easy to prove by using the definition of the derivative therefore define, f(x) = c and the utilize the definiti

Three dimensional spaces - calculus, Three Dimensional Spaces In this ...

Three Dimensional Spaces In this section we will start taking a much more detailed look at 3-D space or R 3 ).  This is a major topic for mathematics as a good portion of Calc

Produce list containing m-vectors delta and lambda, The logarithm of the Po...

The logarithm of the Poisson mixture likelihood (3.10) can be calculated with the following R code: sum(log(outer(x,lambda,dpois) %*% delta)), where delta and lambda are m-ve

Explain binomial distribution, Q. Explain Binomial Distribution? Ans. ...

Q. Explain Binomial Distribution? Ans. The binomial distribution occurs when you are considering the probability function of a binomial experiment. Binomial Experiment

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd